diff --git a/src/core/render/preset/misc.ts b/src/core/render/preset/misc.ts
index 94bdeeb..b233a50 100644
--- a/src/core/render/preset/misc.ts
+++ b/src/core/render/preset/misc.ts
@@ -113,7 +113,11 @@ export class Text extends RenderItem<ETextEvent> {
             this.measure();
         this.length = width;
         this.descent = actualBoundingBoxAscent;
-        this.size(width, actualBoundingBoxAscent + actualBoundingBoxDescent);
+        this.size(
+            width,
+            Math.abs(actualBoundingBoxAscent) +
+                Math.abs(actualBoundingBoxDescent)
+        );
     }
 
     protected handleProps(
diff --git a/src/module/render/components/textboxTyper.ts b/src/module/render/components/textboxTyper.ts
index e872339..5cea0e8 100644
--- a/src/module/render/components/textboxTyper.ts
+++ b/src/module/render/components/textboxTyper.ts
@@ -877,7 +877,8 @@ export class TextContentParser {
 
     private getHeight(metrics: TextMetrics) {
         return (
-            metrics.actualBoundingBoxAscent + metrics.actualBoundingBoxDescent
+            Math.abs(metrics.actualBoundingBoxAscent) +
+            Math.abs(metrics.actualBoundingBoxDescent)
         );
     }
 
@@ -966,6 +967,9 @@ export class TextContentParser {
             if (metrics.width > width) {
                 end = mid;
             } else if (metrics.width === width) {
+                if (height > this.lineHeight) {
+                    this.lineHeight = height;
+                }
                 return mid;
             } else {
                 start = mid;