diff --git a/app/src/protyle/toolbar/index.ts b/app/src/protyle/toolbar/index.ts
index e909271b9..9cf484832 100644
--- a/app/src/protyle/toolbar/index.ts
+++ b/app/src/protyle/toolbar/index.ts
@@ -832,7 +832,7 @@ export class Toolbar {
     <span class="fn__space"></span>
     <button data-type="close" class="block__icon block__icon--show b3-tooltips b3-tooltips__nw" aria-label="${window.siyuan.languages.close}"><svg style="width: 10px"><use xlink:href="#iconClose"></use></svg></button>
 </div>
-<textarea ${protyle.disabled ? " readonly" : ""} spellcheck="false" class="b3-text-field b3-text-field--text fn__block" placeholder="${placeholder}" style="${isMobile() ? "" : "width:" + Math.max(480, renderElement.clientWidth * 0.7) + "px"};max-height:50vh;min-height: 48px;min-width: 268px;border-radius: 0 0 var(--b3-border-radius-b) var(--b3-border-radius-b);font-family: var(--b3-font-family-code);"></textarea></div>`;
+<textarea ${protyle.disabled ? " readonly" : ""} spellcheck="false" class="b3-text-field b3-text-field--text fn__block" placeholder="${placeholder}" style="${isMobile() ? "" : "width:" + Math.max(480, renderElement.clientWidth * 0.7) + "px"};max-height:calc(80vh - 44px);min-height: 48px;min-width: 268px;border-radius: 0 0 var(--b3-border-radius-b) var(--b3-border-radius-b);font-family: var(--b3-font-family-code);"></textarea></div>`;
         const autoHeight = () => {
             textElement.style.height = textElement.scrollHeight + "px";
             if (isMobile()) {