diff --git a/web/app/components/base/quadrant-matrix/index.tsx b/web/app/components/base/quadrant-matrix/index.tsx
index 43fc68e6b6..27aa62f66d 100644
--- a/web/app/components/base/quadrant-matrix/index.tsx
+++ b/web/app/components/base/quadrant-matrix/index.tsx
@@ -3,6 +3,7 @@ import type { FC } from 'react'
 import type { QuadrantData } from './types'
 import { RiExpandDiagonalLine } from '@remixicon/react'
 import { useCallback, useMemo, useState } from 'react'
+import { useTranslation } from 'react-i18next'
 import ActionButton from '@/app/components/base/action-button'
 import FullScreenModal from '@/app/components/base/fullscreen-modal'
 import QuadrantCard from './quadrant-card'
@@ -13,6 +14,7 @@ type QuadrantMatrixProps = {
 }
 
 const QuadrantMatrix: FC<QuadrantMatrixProps> = ({ content }) => {
+  const { t } = useTranslation()
   const [isExpanded, setIsExpanded] = useState(false)
 
   const parsedData = useMemo<QuadrantData | null>(() => {
@@ -42,9 +44,9 @@ const QuadrantMatrix: FC<QuadrantMatrixProps> = ({ content }) => {
     return (
       <div className="flex items-center justify-center rounded-xl bg-components-panel-bg-blur p-8">
         <div className="text-center text-text-secondary">
-          <div className="system-md-semibold mb-2">Invalid Quadrant Data</div>
+          <div className="system-md-semibold mb-2">{t('quadrantMatrix.invalidData', { ns: 'app' })}</div>
           <div className="text-sm text-text-tertiary">
-            Expected JSON format with q1, q2, q3, q4 arrays
+            {t('quadrantMatrix.invalidDataDesc', { ns: 'app' })}
           </div>
         </div>
       </div>
@@ -93,30 +95,17 @@ const QuadrantMatrix: FC<QuadrantMatrixProps> = ({ content }) => {
         <div className="mb-4 flex items-center justify-between">
           <div>
             <div className="system-md-semibold text-text-primary">
-              Eisenhower Matrix
+              {t('quadrantMatrix.title', { ns: 'app' })}
             </div>
             <div className="text-xs text-text-tertiary">
-              {totalTasks}
-              {' '}
-              task
-              {totalTasks !== 1 ? 's' : ''}
-              {' '}
-              prioritized
+              {t('quadrantMatrix.taskCount', { ns: 'app', count: totalTasks })}
             </div>
           </div>
           {/* Legend + Expand Button */}
           <div className="flex items-center gap-3">
             <div className="flex items-center gap-3 text-[11px] text-text-quaternary">
-              <span>
-                <span className="font-medium text-blue-600">I</span>
-                {' '}
-                = Importance
-              </span>
-              <span>
-                <span className="font-medium text-orange-500">U</span>
-                {' '}
-                = Urgency
-              </span>
+              <span>{t('quadrantMatrix.legend.importance', { ns: 'app' })}</span>
+              <span>{t('quadrantMatrix.legend.urgency', { ns: 'app' })}</span>
             </div>
             <ActionButton onClick={handleExpand}>
               <RiExpandDiagonalLine className="h-4 w-4" />
@@ -139,28 +128,15 @@ const QuadrantMatrix: FC<QuadrantMatrixProps> = ({ content }) => {
           <div className="mb-6 flex items-center justify-between">
             <div>
               <div className="text-xl font-semibold text-text-primary">
-                Eisenhower Matrix
+                {t('quadrantMatrix.title', { ns: 'app' })}
               </div>
               <div className="text-sm text-text-tertiary">
-                {totalTasks}
-                {' '}
-                task
-                {totalTasks !== 1 ? 's' : ''}
-                {' '}
-                prioritized
+                {t('quadrantMatrix.taskCount', { ns: 'app', count: totalTasks })}
               </div>
             </div>
             <div className="flex items-center gap-3 text-sm text-text-quaternary">
-              <span>
-                <span className="font-medium text-blue-600">I</span>
-                {' '}
-                = Importance
-              </span>
-              <span>
-                <span className="font-medium text-orange-500">U</span>
-                {' '}
-                = Urgency
-              </span>
+              <span>{t('quadrantMatrix.legend.importance', { ns: 'app' })}</span>
+              <span>{t('quadrantMatrix.legend.urgency', { ns: 'app' })}</span>
             </div>
           </div>
 
diff --git a/web/app/components/base/quadrant-matrix/quadrant-card.tsx b/web/app/components/base/quadrant-matrix/quadrant-card.tsx
index 469c4c4082..4becefe435 100644
--- a/web/app/components/base/quadrant-matrix/quadrant-card.tsx
+++ b/web/app/components/base/quadrant-matrix/quadrant-card.tsx
@@ -1,6 +1,7 @@
 'use client'
 import type { FC } from 'react'
 import type { QuadrantConfig, Task } from './types'
+import { useTranslation } from 'react-i18next'
 import { cn } from '@/utils/classnames'
 import TaskItem from './task-item'
 
@@ -17,7 +18,8 @@ const QuadrantCard: FC<QuadrantCardProps> = ({
   expanded = false,
   maxDisplay = 3,
 }) => {
-  const { number, title, subtitle, bgClass, borderClass, titleClass } = config
+  const { t } = useTranslation()
+  const { number, titleKey, subtitleKey, bgClass, borderClass, titleClass } = config
   const displayLimit = expanded ? Infinity : maxDisplay
   const displayTasks = tasks.slice(0, displayLimit)
   const remainingCount = Math.max(0, tasks.length - displayLimit)
@@ -43,14 +45,14 @@ const QuadrantCard: FC<QuadrantCardProps> = ({
           >
             {number}
           </span>
-          <span className={cn('system-sm-semibold', titleClass)}>{title}</span>
+          <span className={cn('system-sm-semibold', titleClass)}>{t(titleKey, { ns: 'app' })}</span>
           {tasks.length > 0 && (
             <span className="bg-components-badge-bg-gray rounded-full px-1.5 py-0.5 text-[10px] font-medium text-text-tertiary">
               {tasks.length}
             </span>
           )}
         </div>
-        <div className="text-[11px] text-text-tertiary">{subtitle}</div>
+        <div className="text-[11px] text-text-tertiary">{t(subtitleKey, { ns: 'app' })}</div>
       </div>
 
       {/* Task List */}
@@ -61,17 +63,28 @@ const QuadrantCard: FC<QuadrantCardProps> = ({
       >
         {displayTasks.length > 0
           ? (
-              displayTasks.map((task, index) => (
-                <TaskItem
-                  key={`${task.name}-${index}`}
-                  task={task}
-                  expanded={expanded}
-                />
-              ))
+              displayTasks.map((task) => {
+                const taskKey = [
+                  task.name,
+                  task.deadline ?? 'no-deadline',
+                  task.importance_score,
+                  task.urgency_score,
+                  task.description ?? '',
+                  task.action_advice ?? '',
+                ].join('|')
+
+                return (
+                  <TaskItem
+                    key={taskKey}
+                    task={task}
+                    expanded={expanded}
+                  />
+                )
+              })
             )
           : (
               <div className="flex flex-1 items-center justify-center text-xs text-text-quaternary">
-                No tasks
+                {t('quadrantMatrix.noTasks', { ns: 'app' })}
               </div>
             )}
       </div>
@@ -79,10 +92,7 @@ const QuadrantCard: FC<QuadrantCardProps> = ({
       {/* More indicator (only in non-expanded mode) */}
       {!expanded && remainingCount > 0 && (
         <div className="mt-2 shrink-0 text-center text-[11px] text-text-tertiary">
-          +
-          {remainingCount}
-          {' '}
-          more
+          {t('quadrantMatrix.more', { ns: 'app', count: remainingCount })}
         </div>
       )}
     </div>
diff --git a/web/app/components/base/quadrant-matrix/task-item.tsx b/web/app/components/base/quadrant-matrix/task-item.tsx
index 68f47ddde2..2995e2e27d 100644
--- a/web/app/components/base/quadrant-matrix/task-item.tsx
+++ b/web/app/components/base/quadrant-matrix/task-item.tsx
@@ -2,6 +2,7 @@
 import type { FC } from 'react'
 import type { Task } from './types'
 import { RiCalendarLine } from '@remixicon/react'
+import { useTranslation } from 'react-i18next'
 import { cn } from '@/utils/classnames'
 
 type TaskItemProps = {
@@ -11,6 +12,7 @@ type TaskItemProps = {
 }
 
 const TaskItem: FC<TaskItemProps> = ({ task, expanded = false, showScores = true }) => {
+  const { t } = useTranslation()
   const { name, description, deadline, importance_score, urgency_score, action_advice } = task
 
   return (
@@ -57,7 +59,8 @@ const TaskItem: FC<TaskItemProps> = ({ task, expanded = false, showScores = true
           <span className="bg-components-badge-bg-gray inline-flex items-center gap-1 rounded px-1.5 py-0.5 text-[10px] text-text-tertiary">
             <RiCalendarLine className="h-3 w-3" />
             <span>
-              DDL:
+              {t('quadrantMatrix.deadline', { ns: 'app' })}
+              {' '}
               {deadline}
             </span>
           </span>
diff --git a/web/app/components/base/quadrant-matrix/types.ts b/web/app/components/base/quadrant-matrix/types.ts
index b86e686cf4..ecb65826d8 100644
--- a/web/app/components/base/quadrant-matrix/types.ts
+++ b/web/app/components/base/quadrant-matrix/types.ts
@@ -1,6 +1,7 @@
 /**
  * Type definitions for Eisenhower Matrix (Task Quadrant) visualization
  */
+import type { I18nKeysWithPrefix } from '@/types/i18n'
 
 export type Task = {
   name: string
@@ -18,11 +19,15 @@ export type QuadrantData = {
   q4: Task[] // Not Urgent & Not Important - Don't Do
 }
 
+type QuadrantKeyBase = I18nKeysWithPrefix<'app', 'quadrantMatrix.q'>
+type QuadrantTitleKey = Extract<QuadrantKeyBase, `${string}.title`>
+type QuadrantSubtitleKey = Extract<QuadrantKeyBase, `${string}.subtitle`>
+
 export type QuadrantConfig = {
   key: 'q1' | 'q2' | 'q3' | 'q4'
   number: number
-  title: string
-  subtitle: string
+  titleKey: QuadrantTitleKey // i18n key for title
+  subtitleKey: QuadrantSubtitleKey // i18n key for subtitle
   bgClass: string
   borderClass: string
   titleClass: string
@@ -35,8 +40,8 @@ export const QUADRANT_CONFIGS: Record<string, QuadrantConfig> = {
   q1: {
     key: 'q1',
     number: 1,
-    title: 'Do First',
-    subtitle: 'Urgent & Important',
+    titleKey: 'quadrantMatrix.q1.title',
+    subtitleKey: 'quadrantMatrix.q1.subtitle',
     bgClass: 'bg-state-destructive-hover',
     borderClass: 'border-state-destructive-border',
     titleClass: 'text-text-destructive',
@@ -44,8 +49,8 @@ export const QUADRANT_CONFIGS: Record<string, QuadrantConfig> = {
   q2: {
     key: 'q2',
     number: 2,
-    title: 'Schedule',
-    subtitle: 'Important & Not Urgent',
+    titleKey: 'quadrantMatrix.q2.title',
+    subtitleKey: 'quadrantMatrix.q2.subtitle',
     bgClass: 'bg-state-accent-hover',
     borderClass: 'border-state-accent-border',
     titleClass: 'text-text-accent',
@@ -53,8 +58,8 @@ export const QUADRANT_CONFIGS: Record<string, QuadrantConfig> = {
   q3: {
     key: 'q3',
     number: 3,
-    title: 'Delegate',
-    subtitle: 'Urgent & Not Important',
+    titleKey: 'quadrantMatrix.q3.title',
+    subtitleKey: 'quadrantMatrix.q3.subtitle',
     bgClass: 'bg-state-warning-hover',
     borderClass: 'border-state-warning-border',
     titleClass: 'text-text-warning',
@@ -62,8 +67,8 @@ export const QUADRANT_CONFIGS: Record<string, QuadrantConfig> = {
   q4: {
     key: 'q4',
     number: 4,
-    title: 'Don\'t Do',
-    subtitle: 'Not Urgent & Not Important',
+    titleKey: 'quadrantMatrix.q4.title',
+    subtitleKey: 'quadrantMatrix.q4.subtitle',
     bgClass: 'bg-components-panel-on-panel-item-bg',
     borderClass: 'border-divider-regular',
     titleClass: 'text-text-tertiary',
diff --git a/web/i18n/en-US/app.json b/web/i18n/en-US/app.json
index e4109db4b6..bd8392a95a 100644
--- a/web/i18n/en-US/app.json
+++ b/web/i18n/en-US/app.json
@@ -196,6 +196,24 @@
   "publishApp.notSet": "Not set",
   "publishApp.notSetDesc": "Currently nobody can access the web app. Please set permissions.",
   "publishApp.title": "Who can access web app",
+  "quadrantMatrix.deadline": "DDL:",
+  "quadrantMatrix.invalidData": "Invalid Quadrant Data",
+  "quadrantMatrix.invalidDataDesc": "Expected JSON format with q1, q2, q3, q4 arrays",
+  "quadrantMatrix.legend.importance": "I = Importance",
+  "quadrantMatrix.legend.urgency": "U = Urgency",
+  "quadrantMatrix.more": "+{{count}} more",
+  "quadrantMatrix.noTasks": "No tasks",
+  "quadrantMatrix.q1.subtitle": "Urgent & Important",
+  "quadrantMatrix.q1.title": "Do First",
+  "quadrantMatrix.q2.subtitle": "Important & Not Urgent",
+  "quadrantMatrix.q2.title": "Schedule",
+  "quadrantMatrix.q3.subtitle": "Urgent & Not Important",
+  "quadrantMatrix.q3.title": "Delegate",
+  "quadrantMatrix.q4.subtitle": "Not Urgent & Not Important",
+  "quadrantMatrix.q4.title": "Don't Do",
+  "quadrantMatrix.taskCount_one": "{{count}} task prioritized",
+  "quadrantMatrix.taskCount_other": "{{count}} tasks prioritized",
+  "quadrantMatrix.title": "Eisenhower Matrix",
   "removeOriginal": "Delete the original app",
   "roadmap": "See our roadmap",
   "showMyCreatedAppsOnly": "Created by me",
diff --git a/web/i18n/zh-Hans/app.json b/web/i18n/zh-Hans/app.json
index ee60cd3413..6a54e3e8b3 100644
--- a/web/i18n/zh-Hans/app.json
+++ b/web/i18n/zh-Hans/app.json
@@ -196,6 +196,24 @@
   "publishApp.notSet": "未设置",
   "publishApp.notSetDesc": "当前任何人都无法访问 Web 应用。请设置访问权限。",
   "publishApp.title": "谁可以访问 web 应用",
+  "quadrantMatrix.deadline": "截止:",
+  "quadrantMatrix.invalidData": "无效的象限数据",
+  "quadrantMatrix.invalidDataDesc": "需要包含 q1, q2, q3, q4 数组的 JSON 格式",
+  "quadrantMatrix.legend.importance": "I = 重要性",
+  "quadrantMatrix.legend.urgency": "U = 紧急性",
+  "quadrantMatrix.more": "+{{count}} 更多",
+  "quadrantMatrix.noTasks": "暂无任务",
+  "quadrantMatrix.q1.subtitle": "紧急且重要",
+  "quadrantMatrix.q1.title": "立即执行",
+  "quadrantMatrix.q2.subtitle": "重要但不紧急",
+  "quadrantMatrix.q2.title": "计划安排",
+  "quadrantMatrix.q3.subtitle": "紧急但不重要",
+  "quadrantMatrix.q3.title": "委派他人",
+  "quadrantMatrix.q4.subtitle": "不紧急也不重要",
+  "quadrantMatrix.q4.title": "不要做",
+  "quadrantMatrix.taskCount_one": "{{count}} 个任务已排序",
+  "quadrantMatrix.taskCount_other": "{{count}} 个任务已排序",
+  "quadrantMatrix.title": "艾森豪威尔矩阵",
   "removeOriginal": "删除原应用",
   "roadmap": "产品路线图",
   "showMyCreatedAppsOnly": "我创建的",