diff --git a/apps/desktop/src/renderer/locales/settings-usage-copy.ts b/apps/desktop/src/renderer/locales/settings-usage-copy.ts
index 5d26a59edc..303a86963a 100644
--- a/apps/desktop/src/renderer/locales/settings-usage-copy.ts
+++ b/apps/desktop/src/renderer/locales/settings-usage-copy.ts
@@ -29,7 +29,7 @@ export type UsageSettingsCopy = {
   tables: {
     providersAria: string; modelsAria: string; toolsAria: string; pricingAria: string; requestsAria: string;
     providerHeaders: string[]; modelHeaders: string[]; toolHeaders: string[]; pricingHeaders: string[]; requestHeaders: string[];
-    noPricing: string; modelKind: string; toolKind: string; openSession(label: string): string; success: string; error: string;
+    noPricing: string; modelKind: string; toolKind: string; openSession(label: string): string; untitledSession: string; success: string; error: string;
     providerEmptyTitle: string; providerEmptyBody: string; modelEmptyTitle: string; modelEmptyBody: string;
     toolEmptyTitle: string; toolEmptyBody: string; pricingEmptyBody: string;
   };
@@ -49,7 +49,7 @@ const SETTINGS_USAGE_COPY = {
       providersAria: '使用统计供应商统计表', modelsAria: '使用统计模型统计表', toolsAria: '使用统计工具统计表', pricingAria: '使用统计定价配置表', requestsAria: '使用统计请求日志表',
       providerHeaders: ['供应商', '请求', 'Token', '费用'], modelHeaders: ['模型', '请求', 'Token', '费用'], toolHeaders: ['工具', '调用', '成功', '错误', '平均耗时'],
       pricingHeaders: ['供应商', '模型', '输入 / 1M', '输出 / 1M'], requestHeaders: ['时间', '类型', '对象', '任务', 'Token', '费用', '延迟', '状态'],
-      noPricing: '暂无定价覆盖配置', modelKind: '模型', toolKind: '工具', openSession: (label) => `打开 ${label}`, success: '成功', error: '错误',
+      noPricing: '暂无定价覆盖配置', modelKind: '模型', toolKind: '工具', openSession: (label) => `打开会话「${label}」`, untitledSession: '未命名会话', success: '成功', error: '错误',
       providerEmptyTitle: '暂无供应商用量', providerEmptyBody: '完成一次模型请求后，这里会按供应商聚合请求数、Token 与费用。',
       modelEmptyTitle: '暂无模型用量', modelEmptyBody: '完成一次模型请求后，这里会按模型聚合请求数、Token 与费用。',
       toolEmptyTitle: '暂无工具调用', toolEmptyBody: '智能体调用工具后，这里会按工具聚合调用次数、成功、错误与平均耗时。',
@@ -69,7 +69,7 @@ const SETTINGS_USAGE_COPY = {
       providersAria: 'Usage by provider', modelsAria: 'Usage by model', toolsAria: 'Usage by tool', pricingAria: 'Usage pricing configuration', requestsAria: 'Usage request log',
       providerHeaders: ['Provider', 'Requests', 'Tokens', 'Cost'], modelHeaders: ['Model', 'Requests', 'Tokens', 'Cost'], toolHeaders: ['Tool', 'Calls', 'Success', 'Errors', 'Average duration'],
       pricingHeaders: ['Provider', 'Model', 'Input / 1M', 'Output / 1M'], requestHeaders: ['Time', 'Type', 'Target', 'Task', 'Tokens', 'Cost', 'Latency', 'Status'],
-      noPricing: 'No pricing overrides', modelKind: 'Model', toolKind: 'Tool', openSession: (label) => `Open ${label}`, success: 'Success', error: 'Error',
+      noPricing: 'No pricing overrides', modelKind: 'Model', toolKind: 'Tool', openSession: (label) => `Open session "${label}"`, untitledSession: 'Untitled session', success: 'Success', error: 'Error',
       providerEmptyTitle: 'No provider usage', providerEmptyBody: 'After a model request, provider request counts, tokens, and costs appear here.',
       modelEmptyTitle: 'No model usage', modelEmptyBody: 'After a model request, request counts, tokens, and costs appear here by model.',
       toolEmptyTitle: 'No tool calls', toolEmptyBody: 'After an agent calls a tool, calls, successes, errors, and average duration appear here by tool.',
diff --git a/apps/desktop/src/renderer/settings/usage-settings-page.tsx b/apps/desktop/src/renderer/settings/usage-settings-page.tsx
index 89d8e8dd51..feb1d93ace 100644
--- a/apps/desktop/src/renderer/settings/usage-settings-page.tsx
+++ b/apps/desktop/src/renderer/settings/usage-settings-page.tsx
@@ -32,6 +32,7 @@ import {
   proportional,
 } from '@astryxdesign/core';
 import { uiLocaleToIntlLocale } from '@maka/core/ui-locale';
+import { parseDesktopSessionKey } from '../../shared/runtime-host-identity.js';
 import {
   type AppSettings,
   type UpdateAppSettingsResult,
@@ -324,10 +325,10 @@ function UsageRequestsPanel(props: {
       <UsageStatsTable
         ariaLabel={props.copy.tables.requestsAria}
         columns={[
-          { header: props.copy.tables.requestHeaders[0], width: 192 },
+          { header: props.copy.tables.requestHeaders[0], width: 168 },
           { header: props.copy.tables.requestHeaders[1], width: 72 },
           { header: props.copy.tables.requestHeaders[2], grow: true },
-          { header: props.copy.tables.requestHeaders[3] },
+          { header: props.copy.tables.requestHeaders[3], width: 168 },
           { header: props.copy.tables.requestHeaders[4], numeric: true },
           { header: props.copy.tables.requestHeaders[5], numeric: true },
           { header: props.copy.tables.requestHeaders[6], numeric: true },
@@ -442,13 +443,38 @@ function usageRequestTarget(row: UsageStats['logs'][number]) {
 }
 
 function usageRequestSessionCell(row: UsageStats['logs'][number], copy: UsageSettingsCopy, onOpenSession?: (sessionId: string) => void) {
-  const label = shortUsageSessionId(row.sessionId);
+  const label = usageSessionDisplayLabel(row, copy);
   if (!onOpenSession) return label;
   return (
-    <Button variant="ghost" size="sm" onClick={() => onOpenSession(row.sessionId)} label={copy.tables.openSession(label)} />
+    <Button
+      className="settingsUsageSessionCell"
+      variant="ghost"
+      size="sm"
+      onClick={() => onOpenSession(row.sessionId)}
+      label={label}
+      tooltip={copy.tables.openSession(label)}
+    />
   );
 }
 
+// The Task column names the session (conversation) each request belongs to.
+// The name is the real title; untitled sessions fall back to a short slice of
+// their *real* session id (parsed out of the desktop composite key) so rows
+// stay distinguishable instead of collapsing onto the shared host-id prefix.
+function usageSessionDisplayLabel(row: UsageStats['logs'][number], copy: UsageSettingsCopy) {
+  const name = row.sessionName?.trim();
+  if (name) return name;
+  return `${copy.tables.untitledSession} · ${shortRealSessionId(row.sessionId)}`;
+}
+
+function shortRealSessionId(sessionKey: string) {
+  try {
+    return shortUsageSessionId(parseDesktopSessionKey(sessionKey).sessionId);
+  } catch {
+    return shortUsageSessionId(sessionKey);
+  }
+}
+
 function shortUsageSessionId(sessionId: string) {
   return sessionId.length > 8 ? sessionId.slice(0, 8) : sessionId;
 }
diff --git a/apps/desktop/src/renderer/styles/settings/usage.css b/apps/desktop/src/renderer/styles/settings/usage.css
index a9c05464f8..84197a4150 100644
--- a/apps/desktop/src/renderer/styles/settings/usage.css
+++ b/apps/desktop/src/renderer/styles/settings/usage.css
@@ -95,6 +95,29 @@
   min-width: 0;
 }
 
+/* 任务 column: the session-name link truncates inside its fixed column width and
+   surfaces the full name via the button tooltip. StyleX owns the button's own
+   layout; these rules only cap its width and ellipsis the label text (descendant
+   specificity outranks StyleX's single-class atoms), so row height and the
+   neighbouring columns stay aligned no matter how long a session name is. */
+.settingsUsageSessionCell {
+  max-width: 100%;
+  min-width: 0;
+  justify-content: flex-start;
+  /* Align the session-name link flush with the 任务 header and the other
+     left-aligned text columns by neutralising the ghost button's leading inline
+     padding. !important because Astryx's StyleX size padding is unlayered and
+     otherwise wins on source order (same escape hatch as sidebar.css). */
+  padding-inline-start: 0 !important;
+}
+
+.settingsUsageSessionCell span {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
 /* Empty tab: the shared EmptyState card, nudged to the density of the
    stats surface rather than the full page hero. */
 .settingsUsageEmpty {
diff --git a/apps/desktop/stories/settings/settings-pages.stories.tsx b/apps/desktop/stories/settings/settings-pages.stories.tsx
index ae7910e74b..b3609bdd00 100644
--- a/apps/desktop/stories/settings/settings-pages.stories.tsx
+++ b/apps/desktop/stories/settings/settings-pages.stories.tsx
@@ -205,12 +205,14 @@ function makeUsageLog(input: {
   toolName?: string;
   status?: 'success' | 'error';
   minutesAgo: number;
+  sessionName?: string;
 }): UsageStats['logs'][number] {
   return {
     id: input.id,
     ts: NOW - input.minutesAgo * 60_000,
     kind: input.kind,
     sessionId: `b0efaaf9-9e58-46c1-bfea-${input.id.padStart(12, '0')}`,
+    sessionName: input.sessionName ?? '',
     turnId: `turn-${input.id}`,
     provider: 'zai-coding-plan',
     model: input.model,
@@ -228,6 +230,8 @@ const usageLogs: UsageStats['logs'] = [
     id: '1',
     kind: 'model',
     model: 'anthropic/claude-sonnet-4-5-20250929-preview-extended-thinking',
+    // A long session name exercises the 任务 column's truncate-plus-tooltip path.
+    sessionName: '重构使用统计页请求日志的任务列，改为显示会话名称并处理超长标题的截断',
     minutesAgo: 4,
   }),
   makeUsageLog({
@@ -235,10 +239,12 @@ const usageLogs: UsageStats['logs'] = [
     kind: 'tool',
     model: 'glm-4.7',
     toolName: 'mcp__cloud_workspace__list_repository_branch_protection_rules',
+    sessionName: '排查 MCP 分支保护规则拉取失败',
     minutesAgo: 9,
   }),
+  // No sessionName → renders the "未命名会话 · <short id>" fallback.
   makeUsageLog({ id: '3', kind: 'model', model: 'glm-4.7', status: 'error', minutesAgo: 16 }),
-  makeUsageLog({ id: '4', kind: 'tool', model: 'glm-4.7', toolName: 'Bash', minutesAgo: 25 }),
+  makeUsageLog({ id: '4', kind: 'tool', model: 'glm-4.7', toolName: 'Bash', sessionName: 'Bash 环境探查', minutesAgo: 25 }),
 ];
 
 const usageStats: UsageStats = {
diff --git a/packages/core/src/settings.ts b/packages/core/src/settings.ts
index e3467dad00..0cf43357b0 100644
--- a/packages/core/src/settings.ts
+++ b/packages/core/src/settings.ts
@@ -383,6 +383,8 @@ export interface UsageRequestLog {
   ts: number;
   kind: 'model' | 'tool';
   sessionId: string;
+  /** Human-readable session title (SessionHeader.name); may be empty for untitled sessions. */
+  sessionName: string;
   turnId: string;
   provider: string;
   model: string;
diff --git a/packages/storage/src/usage-stats-store.ts b/packages/storage/src/usage-stats-store.ts
index 69296c2d91..8db371465f 100644
--- a/packages/storage/src/usage-stats-store.ts
+++ b/packages/storage/src/usage-stats-store.ts
@@ -26,7 +26,7 @@ import {
 } from './operational-state-store.js';
 import { createSqliteSessionMetadataStore } from './sqlite-session-metadata-store.js';
 
-type UsageSessionHeader = Pick<SessionHeader, 'id' | 'llmConnectionSlug' | 'model'>;
+type UsageSessionHeader = Pick<SessionHeader, 'id' | 'name' | 'llmConnectionSlug' | 'model'>;
 
 type UsageAssistantMessage = {
   type: 'assistant';
@@ -92,6 +92,7 @@ export async function readUsageStats(
         ts: message.ts,
         kind: 'model' as const,
         sessionId: header.id,
+        sessionName: header.name,
         turnId: message.turnId,
         provider: header.llmConnectionSlug,
         model: assistantByTurn.get(message.turnId) ?? header.model,
@@ -158,6 +159,7 @@ async function readStoredSessions(
       sessions.push({
         header: {
           id: header.id,
+          name: header.name,
           llmConnectionSlug: header.llmConnectionSlug,
           model: header.model,
         },
@@ -175,10 +177,12 @@ async function readStoredSessions(
 function normalizeUsageSessionHeader(value: unknown, sessionId: string): UsageSessionHeader | null {
   if (!isRecord(value)) return null;
   if (value.id !== sessionId) return null;
+  if (typeof value.name !== 'string') return null;
   if (typeof value.llmConnectionSlug !== 'string') return null;
   if (typeof value.model !== 'string') return null;
   return {
     id: value.id,
+    name: value.name,
     llmConnectionSlug: value.llmConnectionSlug,
     model: value.model,
   };
@@ -365,6 +369,7 @@ function toolLogRowsFromMessages(
         ts,
         kind: 'tool' as const,
         sessionId: header.id,
+        sessionName: header.name,
         turnId: call.turnId,
         provider: header.llmConnectionSlug,
         model: header.model,