diff --git a/pages/picking/picking.vue b/pages/picking/picking.vue
index f0488f3..7a723b5 100644
--- a/pages/picking/picking.vue
+++ b/pages/picking/picking.vue
@@ -516,6 +516,10 @@
 			if (!requireSession()) return
 			this.currentUser = session.currentUser
 			if (options.taskId) {
+				// Session display state can belong to the task opened before this route.
+				// Only the scoped draft restored after loading this task may restore its history.
+				this.scanValue = ''
+				this.scanHistory = []
 				// A local completion marker belongs to the previously opened task. The
 				// canonical server detail decides whether this task is complete.
 				this.completedBoxes = {}
diff --git a/tests/picking-refresh-route.test.mjs b/tests/picking-refresh-route.test.mjs
index c294492..128999d 100644
--- a/tests/picking-refresh-route.test.mjs
+++ b/tests/picking-refresh-route.test.mjs
@@ -4,6 +4,34 @@ import { readFile } from 'node:fs/promises'
 
 const read = (path) => readFile(new URL(path, import.meta.url), 'utf8')
 
+test('opening another task clears prior scan display without deleting scoped draft or submission identity', async () => {
+	const page = await read('../pages/picking/picking.vue')
+	const load = page.match(/onLoad\(options = \{\}\) \{[\s\S]*?\r?\n\t\t\},/)?.[0]
+	const record = page.match(/recordScanResult\([^\n]+\) \{[\s\S]*?\r?\n\t\t\t\},/)?.[0]
+	assert.ok(load && record)
+	const hooks = new Function('requireSession', 'session', `return ({${load}${record}})`)(() => true, { currentUser: { id: '7' } })
+	const savedDraft = { 0: { scannedBoxCodes: { 'DP-OLD': 'old-item' }, itemStates: { 'old-item': 'picked' } } }
+	const context = { scanValue: 'DP-OLD', scanHistory: [{ id: 'old', boxCode: 'DP-OLD', title: '整托已记入草稿' }],
+		boxDrafts: savedDraft, submitId: 'existing-operation', itemStates: { 'old-item': 'picked' } }
+	hooks.onLoad.call(context, { taskId: 'new-task', warehouseId: 'warehouse' })
+	assert.equal(context.scanValue, '')
+	assert.deepEqual(context.scanHistory, [])
+	assert.equal(context.remoteTaskId, 'new-task')
+	assert.equal(context.boxDrafts, savedDraft)
+	assert.equal(context.submitId, 'existing-operation')
+	assert.deepEqual(context.itemStates, { 'old-item': 'picked' })
+	hooks.recordScanResult.call(context, 'success', '整托已记入草稿', 'DP-NEW', '整托 1 箱，提交后保存')
+	assert.equal(context.scanHistory.length, 1)
+	assert.equal(context.scanHistory[0].boxCode, 'DP-NEW')
+	// A same-task route reopen also clears input; canonical scoped restoration still owns draft history.
+	hooks.onLoad.call(context, { taskId: 'new-task', warehouseId: 'warehouse' })
+	assert.deepEqual(context.scanHistory, [])
+	assert.equal(context.boxDrafts, savedDraft)
+	const restore = page.match(/restoreRemoteDraft\(\) \{[\s\S]*?\r?\n\t\t\t\},/)?.[0] || ''
+	assert.match(restore, /restorePickingSession\(this\.draftIdentity\(\)\)/)
+	assert.match(restore, /this\.scanHistory = this\.normalizeScanHistory\(restored\.scanHistory\)/)
+})
+
 test('duplicate onShow shares one load chain while background return refreshes again', async () => {
 	const page = await read('../pages/picking/picking.vue')
 	const show = page.match(/async onShow\(\) \{[\s\S]*?\r?\n\t\t\},/)?.[0]