diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
index 6b000211a..adc7a3384 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
@@ -190,16 +190,18 @@ class AnalyzeRule(var book: BaseBook? = null) {
                     putRule(sourceRule.putMap)
                     sourceRule.makeUpRule(result)
                     result?.let {
-                        result = when (sourceRule.mode) {
-                            Mode.Js -> evalJS(sourceRule.rule, it)
-                            Mode.Json -> getAnalyzeByJSonPath(it).getString(sourceRule.rule)
-                            Mode.XPath -> getAnalyzeByXPath(it).getString(sourceRule.rule)
-                            Mode.Default -> if (isUrl) {
-                                getAnalyzeByJSoup(it).getString0(sourceRule.rule)
-                            } else {
-                                getAnalyzeByJSoup(it).getString(sourceRule.rule)
+                        if (sourceRule.rule.isNotBlank() || sourceRule.replaceRegex.isEmpty()) {
+                            result = when (sourceRule.mode) {
+                                Mode.Js -> evalJS(sourceRule.rule, it)
+                                Mode.Json -> getAnalyzeByJSonPath(it).getString(sourceRule.rule)
+                                Mode.XPath -> getAnalyzeByXPath(it).getString(sourceRule.rule)
+                                Mode.Default -> if (isUrl) {
+                                    getAnalyzeByJSoup(it).getString0(sourceRule.rule)
+                                } else {
+                                    getAnalyzeByJSoup(it).getString(sourceRule.rule)
+                                }
+                                else -> sourceRule.rule
                             }
-                            else -> sourceRule.rule
                         }
                         if (sourceRule.replaceRegex.isNotEmpty()) {
                             result = replaceRegex(result.toString(), sourceRule)