diff --git a/packages/frontend/core/src/blocksuite/view-extensions/code-block-preview/mermaid-preview.ts b/packages/frontend/core/src/blocksuite/view-extensions/code-block-preview/mermaid-preview.ts
index 366c5641c..34a745988 100644
--- a/packages/frontend/core/src/blocksuite/view-extensions/code-block-preview/mermaid-preview.ts
+++ b/packages/frontend/core/src/blocksuite/view-extensions/code-block-preview/mermaid-preview.ts
@@ -50,7 +50,6 @@ export class MermaidPreview extends SignalWatcher(
     .mermaid-preview-container {
       width: 100%;
       min-height: 300px;
-      max-height: 600px;
       border: 1px solid ${unsafeCSSVarV2('layer/insideBorder/border')};
       border-radius: 8px;
       background: ${unsafeCSSVarV2('layer/background/primary')};