diff --git a/packages/common/infra/src/blocksuite/migration/workspace.ts b/packages/common/infra/src/blocksuite/migration/workspace.ts
index b2fa335d7..0ba756460 100644
--- a/packages/common/infra/src/blocksuite/migration/workspace.ts
+++ b/packages/common/infra/src/blocksuite/migration/workspace.ts
@@ -11,7 +11,8 @@ export enum MigrationPoint {
 }
 
 export function checkWorkspaceCompatibility(
-  workspace: Workspace
+  workspace: Workspace,
+  isCloud: boolean
 ): MigrationPoint | null {
   // check if there is any key starts with 'space:' on root doc
   const spaceMetaObj = workspace.doc.share.get('space:meta') as
@@ -20,7 +21,9 @@ export function checkWorkspaceCompatibility(
   const docKeys = Array.from(workspace.doc.share.keys());
   const haveSpaceMeta = !!spaceMetaObj && spaceMetaObj.size > 0;
   const haveLegacySpace = docKeys.some(key => key.startsWith('space:'));
-  if (haveSpaceMeta || haveLegacySpace) {
+
+  // DON'T UPGRADE SUBDOC ON CLOUD
+  if (!isCloud && (haveSpaceMeta || haveLegacySpace)) {
     return MigrationPoint.SubDoc;
   }
 
diff --git a/packages/frontend/workspace/src/upgrade/index.ts b/packages/frontend/workspace/src/upgrade/index.ts
index 53e06a5dc..48c7a14bc 100644
--- a/packages/frontend/workspace/src/upgrade/index.ts
+++ b/packages/frontend/workspace/src/upgrade/index.ts
@@ -49,7 +49,8 @@ export class WorkspaceUpgradeController {
 
   checkIfNeedUpgrade() {
     const needUpgrade = !!checkWorkspaceCompatibility(
-      this.workspace.blockSuiteWorkspace
+      this.workspace.blockSuiteWorkspace,
+      this.workspace.flavour === WorkspaceFlavour.AFFINE_CLOUD
     );
     this.status = {
       ...this.status,
@@ -69,7 +70,8 @@ export class WorkspaceUpgradeController {
       await this.workspace.engine.sync.waitForSynced();
 
       const step = checkWorkspaceCompatibility(
-        this.workspace.blockSuiteWorkspace
+        this.workspace.blockSuiteWorkspace,
+        this.workspace.flavour === WorkspaceFlavour.AFFINE_CLOUD
       );
 
       if (!step) {