diff --git a/simple-mind-map/src/core/render/node/Style.js b/simple-mind-map/src/core/render/node/Style.js
index 9f75a8bd..98359644 100644
--- a/simple-mind-map/src/core/render/node/Style.js
+++ b/simple-mind-map/src/core/render/node/Style.js
@@ -183,7 +183,7 @@ class Style {
       })
       .css({
         'font-family': styles.fontFamily,
-        'font-size': styles.fontSize,
+        'font-size': styles.fontSize + 'px',
         'font-weight': styles.fontWeight,
         'font-style': styles.fontStyle,
         'text-decoration': styles.textDecoration
@@ -338,7 +338,7 @@ class Style {
     node2.fill({ color: color })
     fillNode.fill({ color: fill })
     if (this.ctx.mindMap.opt.isShowExpandNum) {
-      node.attr({ 'font-size': fontSize, 'font-color': fontColor })
+      node.attr({ 'font-size': fontSize + 'px', 'font-color': fontColor })
     }
   }
 
diff --git a/simple-mind-map/src/core/render/node/nodeCooperate.js b/simple-mind-map/src/core/render/node/nodeCooperate.js
index 72aa6e88..433c1be3 100644
--- a/simple-mind-map/src/core/render/node/nodeCooperate.js
+++ b/simple-mind-map/src/core/render/node/nodeCooperate.js
@@ -28,7 +28,7 @@ function createTextAvatar(item) {
       color: '#fff'
     })
     .css({
-      'font-size': fontSize
+      'font-size': fontSize + 'px'
     })
     .dx(-fontSize / 2)
     .dy((avatarSize - fontSize) / 2)
diff --git a/simple-mind-map/src/plugins/RichText.js b/simple-mind-map/src/plugins/RichText.js
index 5fa8fb3c..0695adc7 100644
--- a/simple-mind-map/src/plugins/RichText.js
+++ b/simple-mind-map/src/plugins/RichText.js
@@ -224,8 +224,7 @@ class RichText {
         box-sizing: border-box; 
         box-shadow: 0 0 20px rgba(0,0,0,.5);
         outline: none; 
-        word-break: 
-        break-all;
+        word-break: break-all;
         padding: ${paddingY}px ${paddingX}px;
       `
       this.textEditNode.addEventListener('click', e => {
diff --git a/simple-mind-map/src/plugins/associativeLine/associativeLineText.js b/simple-mind-map/src/plugins/associativeLine/associativeLineText.js
index e5edca8d..3fdcfced 100644
--- a/simple-mind-map/src/plugins/associativeLine/associativeLineText.js
+++ b/simple-mind-map/src/plugins/associativeLine/associativeLineText.js
@@ -166,7 +166,7 @@ function styleText(node) {
     })
     .css({
       'font-family': associativeLineTextFontFamily,
-      'font-size': associativeLineTextFontSize
+      'font-size': associativeLineTextFontSize + 'px'
     })
 }