diff --git a/pages/picking/picking.vue b/pages/picking/picking.vue
index 941bd90..d788f2c 100644
--- a/pages/picking/picking.vue
+++ b/pages/picking/picking.vue
@@ -31,7 +31,12 @@
 						</view>
 					</view>
 				</view>
+				<view class="stage-switch" role="tablist" aria-label="作业阶段">
+					<button class="stage-tab" :class="{ active: activeStage === 'picking' }" role="tab" :aria-selected="activeStage === 'picking'" @tap="selectStage('picking')">拣货作业</button>
+					<button class="stage-tab" :class="{ active: activeStage === 'evidence', locked: !loadingStageReady }" role="tab" :aria-selected="activeStage === 'evidence'" :aria-disabled="!loadingStageReady" @tap="selectStage('evidence')">装柜取证<text v-if="!loadingStageReady" class="stage-tab-hint">完成拣货后开放</text></button>
+				</view>
 
+				<view v-if="activeStage === 'picking' || !loadingStageReady" class="picking-stage">
 				<view class="scan-section">
 					<view class="scan-row">
 						<ScanTargetInput v-model="scanValue" name="boxCode" label="箱码扫码框" placeholder="扫描或输入箱唛标签码" :active="activeScanField === 'boxCode'" @activate="setScanTarget" @submit="handleManualSubmit" />
@@ -115,9 +120,10 @@
 						</view>
 					</view>
 				</view>
+				</view>
 			</view>
 
-			<view v-if="loadingStageReady" class="loading-evidence-section">
+			<view v-if="loadingStageReady && activeStage === 'evidence'" class="loading-evidence-section">
 				<view class="section-heading-row">
 					<view><text class="section-title">装柜证据</text><text class="section-subtitle">空仓、半仓、满仓、锁仓及带锁码照</text></view>
 					<text class="sync-state" :class="remoteSyncState.tone">{{ remoteSyncState.label }}</text>
@@ -152,7 +158,7 @@
 				<button class="evidence-retry-btn" :disabled="remoteLoading" @tap="refreshTask">刷新任务</button>
 			</view>
 
-			<view class="submit-section">
+			<view v-if="activeStage === 'picking' || !loadingStageReady" class="submit-section">
 				<view class="submit-info">
 					<view class="submit-pending"><text class="submit-pending-number">{{ summary.pending }}</text><text class="submit-pending-label"> 箱待拣</text></view>
 					<text class="submit-status-hint">{{ submitStatusHint }}</text>
@@ -363,6 +369,7 @@
 				incompleteReasons: INCOMPLETE_REASONS,
 				...getPickingSession(),
 				activeScanField: 'boxCode',
+				activeStage: 'picking',
 				partialFocused: false,
 				boxDropdownOpen: false,
 				activeOverlay: '',
@@ -516,6 +523,13 @@
 			return false
 		},
 		methods: {
+			selectStage(stage) {
+				if (stage === 'evidence' && !this.loadingStageReady) {
+					this.showToast('请先完成拣货并刷新任务', 'warning')
+					return
+				}
+				this.activeStage = stage
+			},
 			debugEvidence(event, payload = {}) {
 				try { console.info(`[PDA] evidence.${event}`, payload) } catch (_) { /* console may be unavailable on a device */ }
 			},
@@ -692,6 +706,7 @@
 				this.taskRequestId += 1
 				this.submitting = false
 				this.currentBoxIndex = index
+				this.activeStage = 'picking'
 				this.currentBox.inboundId = null
 				this.currentBox.inboundVersion = null
 				this.remoteTaskId = null
diff --git a/styles/pda.scss b/styles/pda.scss
index 5d58aa9..c131b4a 100644
--- a/styles/pda.scss
+++ b/styles/pda.scss
@@ -289,6 +289,47 @@
 		transition: transform 160ms ease-out;
 	}
 
+	.stage-switch {
+		display: flex;
+		gap: 4px;
+		margin: 0 12px 10px;
+		padding: 4px;
+		border: 1px solid $border;
+		border-radius: 10px;
+		background: #eef2f7;
+	}
+
+	.stage-tab {
+		flex: 1;
+		min-height: 42px;
+		padding: 0 8px;
+		border: 0;
+		border-radius: 7px;
+		color: $text-secondary;
+		font-size: 13px;
+		font-weight: 600;
+		line-height: 42px;
+		background: transparent;
+	}
+
+	.stage-tab.active {
+		color: $primary;
+		background: #ffffff;
+		box-shadow: 0 1px 4px rgba(31, 41, 55, 0.12);
+	}
+
+	.stage-tab.locked {
+		color: #9aa5b1;
+	}
+
+	.stage-tab-hint {
+		display: block;
+		margin-top: -9px;
+		font-size: 9px;
+		font-weight: 400;
+		line-height: 12px;
+	}
+
 	.box-chevron.open {
 		transform: rotate(180deg);
 	}
diff --git a/tests/picking-evidence-stage.test.mjs b/tests/picking-evidence-stage.test.mjs
index d4199e0..8b33b01 100644
--- a/tests/picking-evidence-stage.test.mjs
+++ b/tests/picking-evidence-stage.test.mjs
@@ -5,7 +5,7 @@ import { readFile } from 'node:fs/promises'
 const page = await readFile(new URL('../pages/picking/picking.vue', import.meta.url), 'utf8')
 
 test('loading evidence is mounted only after the current picking task is complete', () => {
-	assert.match(page, /v-if="loadingStageReady" class="loading-evidence-section"/)
+	assert.match(page, /v-if="loadingStageReady && activeStage === 'evidence'" class="loading-evidence-section"/)
 	assert.match(page, /isPickingCompleteTask\(task\)[\s\S]*?AWAITING_REVIEW[\s\S]*?COMPLETED/)
 	assert.match(page, /pickingCompleted\(\)[\s\S]*?completedBoxes\[this\.currentBoxIndex\][\s\S]*?isPickingCompleteTask\(this\.remotePick\)/)
 	assert.doesNotMatch(page, /class="loading-evidence-section" v-if="currentBox\.inboundId"/)
@@ -33,6 +33,14 @@ test('AWAITING_REVIEW alone cannot mount or request evidence without a server lo
 	assert.doesNotMatch(page, /if \(this\.pickingCompleted\) await this\.loadLoadingEvidence\(\)/)
 })
 
+test('picking and evidence are separate operator-selected stages', () => {
+	assert.match(page, /class="stage-switch" role="tablist"/)
+	assert.match(page, /@tap="selectStage\('picking'\)"/)
+	assert.match(page, /@tap="selectStage\('evidence'\)"/)
+	assert.match(page, /selectStage\(stage\)[\s\S]*?stage === 'evidence'[\s\S]*?!this\.loadingStageReady[\s\S]*?请先完成拣货并刷新任务/)
+	assert.match(page, /activeStage === 'picking' \|\| !loadingStageReady/)
+})
+
 test('evidence identity is bound to task, inbound, loading plan and container booking', () => {
 	assert.match(page, /captureEvidenceIdentity\(\)[\s\S]*?taskId:[\s\S]*?inboundId:[\s\S]*?loadingPlanId:[\s\S]*?containerBookingId:/)
 	assert.match(page, /isSameEvidenceIdentity\(left, right\)[\s\S]*?taskId[\s\S]*?inboundId[\s\S]*?loadingPlanId[\s\S]*?containerBookingId/)