diff --git a/AIProofread/Bridge.cs b/AIProofread/Bridge.cs
index 7a196f3..139a61a 100644
--- a/AIProofread/Bridge.cs
+++ b/AIProofread/Bridge.cs
@@ -97,11 +97,11 @@ namespace AIProofread
         {
             Globals.ThisAddIn.ShowDetection();
             // 获取当前选中的选区的首尾段落起始与结束位置
-            if (start != -1 && end != -1)
+            if (start == -1 || end == -1)
             {
                 var currectSelectRange = Globals.ThisAddIn.ribbon.currectSelectRange;
-                start = currectSelectRange.Paragraphs.First.Range.Start;
-                end = currectSelectRange.Paragraphs.Last.Range.End;
+                start = currectSelectRange.Start;
+                end = currectSelectRange.End;
             }
             var data = JSONObject.Create().Put("start", start).Put("end", end).ToString();
             Globals.ThisAddIn.formCommonsenseDetection.SendMessageToWeb("detect-range", data);
diff --git a/AIProofread/Model/DocumentInfo.cs b/AIProofread/Model/DocumentInfo.cs
index 011bca4..b358052 100644
--- a/AIProofread/Model/DocumentInfo.cs
+++ b/AIProofread/Model/DocumentInfo.cs
@@ -638,7 +638,7 @@ namespace AIProofread.Model
                         int _prev = prevOffset;
                         bool isDisabled = false;
                         // 判断查找内容是否在原始数据中，否则直跳过
-                        if(item.Tag != "i" )
+                        if(item.Tag != "i" && item.Origin.Trim().Length > 0)
                         {
                             isDisabled = correct.Insert.IndexOf(item.Origin) == -1;
                         }
diff --git a/AIProofread/Ribbon1.cs b/AIProofread/Ribbon1.cs
index 0fc9ee5..481646c 100644
--- a/AIProofread/Ribbon1.cs
+++ b/AIProofread/Ribbon1.cs
@@ -573,8 +573,8 @@ namespace AIProofread
         private void btnDetectionParagraph_Click(object sender, RibbonControlEventArgs e)
         {
             // 获取当前选中的选区的首尾段落起始与结束位置
-            var start = currectSelectRange.Paragraphs.First.Range.Start;
-            var end = currectSelectRange.Paragraphs.Last.Range.End;
+            var start = currectSelectRange.Start; // .Paragraphs.First.Range
+            var end = currectSelectRange.End; // .Paragraphs.Last.Range
             var data = JSONObject.Create().Put("start", start).Put("end", end).ToString();
 
             Globals.ThisAddIn.SendMessageToWeb("show-check-range", data);
diff --git a/AIProofread/core/DocumentUtil.cs b/AIProofread/core/DocumentUtil.cs
index 1ec49df..2c55761 100644
--- a/AIProofread/core/DocumentUtil.cs
+++ b/AIProofread/core/DocumentUtil.cs
@@ -435,7 +435,7 @@ namespace AIProofread
                 }
                 // 直接找
                 var range1 = document.Range(offset + item.Start, offset + item.End + 1);
-                if(item.Origin == " " && range1.Text == " " || range1.Text == "　")
+                if(item.Origin == " " && (range1.Text == " " || range1.Text == "　" || range1.Text.Trim().Length == 0))
                 {
                     return range1;
                 }
@@ -526,7 +526,7 @@ namespace AIProofread
                 prevOffset = start;
                 var range = document.Range(findOffset, findOffset + wordEnd - wordStart + 1);
 
-                if (item.Origin == " " && range.Text == " " || range.Text == "　")
+                if (item.Origin == " " && (range.Text == " " || range.Text == "　" || range.Text.Trim().Length == 0))
                 {
                     return range;
                 }