diff --git a/event-binding.js b/event-binding.js
index e0f5fca..397912a 100644
--- a/event-binding.js
+++ b/event-binding.js
@@ -211,7 +211,11 @@ export function onGenerationStartedController(
   params = {},
   dryRun = false,
 ) {
-  if (dryRun) return null;
+  if (dryRun) {
+    runtime.markDryRunPromptPreview?.();
+    return null;
+  }
+  runtime.clearDryRunPromptPreview?.();
   if (params?.automatic_trigger || params?.quiet_prompt) return null;
 
   const generationType = String(type || "normal").trim() || "normal";
@@ -382,6 +386,13 @@ export async function onBeforeCombinePromptsController(
   runtime,
   promptData = null,
 ) {
+  if (runtime.consumeDryRunPromptPreview?.()) {
+    return {
+      skipped: true,
+      reason: "dry-run-preview",
+    };
+  }
+
   const frozenInputSnapshot =
     runtime.consumeHostGenerationInputSnapshot?.() ||
     runtime.getPendingHostGenerationInputSnapshot?.() ||
diff --git a/extraction-controller.js b/extraction-controller.js
index 9324128..4cf8989 100644
--- a/extraction-controller.js
+++ b/extraction-controller.js
@@ -125,7 +125,10 @@ export async function executeExtractionBatchController(
 }
 
 export async function runExtractionController(runtime) {
-  if (runtime.getIsExtracting()) return;
+  if (runtime.getIsExtracting()) {
+    runtime.deferAutoExtraction?.("extracting");
+    return;
+  }
 
   const settings = runtime.getSettings();
   if (!settings.enabled) return;
diff --git a/index.js b/index.js
index 54e5d07..dec3119 100644
--- a/index.js
+++ b/index.js
@@ -3760,6 +3760,33 @@ function maybeResumePendingAutoExtraction(source = "auto-extraction-resume") {
   };
 }
 
+function markDryRunPromptPreview(ttlMs = GENERATION_RECALL_HOOK_BRIDGE_MS) {
+  const resolvedTtlMs = Math.max(
+    100,
+    Math.floor(Number(ttlMs) || GENERATION_RECALL_HOOK_BRIDGE_MS),
+  );
+  skipBeforeCombineRecallUntil = Date.now() + resolvedTtlMs;
+  return skipBeforeCombineRecallUntil;
+}
+
+function clearDryRunPromptPreview() {
+  const hadPendingSkip = skipBeforeCombineRecallUntil > Date.now();
+  skipBeforeCombineRecallUntil = 0;
+  return hadPendingSkip;
+}
+
+function consumeDryRunPromptPreview(now = Date.now()) {
+  if (skipBeforeCombineRecallUntil <= now) {
+    if (skipBeforeCombineRecallUntil !== 0) {
+      skipBeforeCombineRecallUntil = 0;
+    }
+    return false;
+  }
+
+  skipBeforeCombineRecallUntil = 0;
+  return true;
+}
+
 function isGraphEffectivelyEmpty(graph) {
   if (!graph || typeof graph !== "object") {
     return true;
@@ -7902,10 +7929,12 @@ function onMessageSwiped(messageId, meta = null) {
 function onGenerationStarted(type, params = {}, dryRun = false) {
   return onGenerationStartedController(
     {
+      clearDryRunPromptPreview,
       freezeHostGenerationInputSnapshot,
       getPendingRecallSendIntent: () => pendingRecallSendIntent,
       getSendTextareaValue,
       isFreshRecallInputRecord,
+      markDryRunPromptPreview,
       normalizeRecallInputText,
     },
     type,
@@ -7949,6 +7978,7 @@ async function onBeforeCombinePrompts(promptData = null) {
       buildHistoryGenerationRecallInput,
       buildNormalGenerationRecallInput,
       clearLiveRecallInjectionPromptForRewrite,
+      consumeDryRunPromptPreview,
       consumeHostGenerationInputSnapshot,
       createGenerationRecallContext,
       getContext,
diff --git a/tests/p0-regressions.mjs b/tests/p0-regressions.mjs
index c265a89..8df323a 100644
--- a/tests/p0-regressions.mjs
+++ b/tests/p0-regressions.mjs
@@ -2697,6 +2697,16 @@ async function testGenerationRecallBeforeCombineRunsStandalone() {
   );
 }
 
+async function testGenerationRecallDryRunPreviewDoesNotTriggerBeforeCombineRecall() {
+  const harness = await createGenerationRecallHarness();
+  harness.chat = [{ is_user: true, mes: "Prompt Viewer 预览" }];
+
+  harness.result.onGenerationStarted("normal", {}, true);
+  await harness.result.onBeforeCombinePrompts();
+
+  assert.equal(harness.runRecallCalls.length, 0);
+}
+
 async function testGenerationRecallDifferentKeyCanRunAgain() {
   const harness = await createGenerationRecallHarness();
   harness.chat = [{ is_user: true, mes: "第一条" }];
@@ -2874,6 +2884,19 @@ async function testAutoExtractionDefersWhenGraphNotReady() {
   assert.equal(statuses[0]?.[0], "等待图谱加载");
 }
 
+async function testAutoExtractionDefersWhenAlreadyExtracting() {
+  const deferredReasons = [];
+
+  await runExtractionController({
+    getIsExtracting: () => true,
+    deferAutoExtraction(reason) {
+      deferredReasons.push(reason);
+    },
+  });
+
+  assert.deepEqual(deferredReasons, ["extracting"]);
+}
+
 async function testAutoExtractionDefersWhenHistoryRecoveryBusy() {
   const deferredReasons = [];
 
@@ -3986,12 +4009,14 @@ await testGenerationRecallSameKeyCanRunAgainImmediatelyAsNewGeneration();
 await testGenerationRecallSameKeyCanRunAgainAfterBridgeWindow();
 await testBeforeCombineRecallNotSkippedWhenGraphLoadingButRuntimeGraphReadable();
 await testGenerationRecallBeforeCombineRunsStandalone();
+await testGenerationRecallDryRunPreviewDoesNotTriggerBeforeCombineRecall();
 await testGenerationRecallDifferentKeyCanRunAgain();
 await testGenerationRecallSkippedStateDoesNotLoopToBeforeCombine();
 await testGenerationRecallSentMessageClearsStaleTransactionForSameKey();
 await testRegisterCoreEventHooksIsIdempotent();
 await testChatChangedDoesNotClearCoreEventBindings();
 await testAutoExtractionDefersWhenGraphNotReady();
+await testAutoExtractionDefersWhenAlreadyExtracting();
 await testAutoExtractionDefersWhenHistoryRecoveryBusy();
 await testRemoveNodeHandlesCyclicChildGraph();
 await testGenerationRecallAppliesFinalInjectionOncePerTransaction();