diff --git a/shenyu-integrated-test/shenyu-integrated-test-http/script/healthcheck.sh b/shenyu-integrated-test/shenyu-integrated-test-http/script/healthcheck.sh
index 015ad1cd7f6c..22a76034abee 100644
--- a/shenyu-integrated-test/shenyu-integrated-test-http/script/healthcheck.sh
+++ b/shenyu-integrated-test/shenyu-integrated-test-http/script/healthcheck.sh
@@ -1,4 +1,4 @@
- s#!/bin/bash
+#!/bin/bash
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
diff --git a/shenyu-plugin/shenyu-plugin-modify-response/src/main/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePlugin.java b/shenyu-plugin/shenyu-plugin-modify-response/src/main/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePlugin.java
index dd2598e7247a..a32210b9fa36 100644
--- a/shenyu-plugin/shenyu-plugin-modify-response/src/main/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePlugin.java
+++ b/shenyu-plugin/shenyu-plugin-modify-response/src/main/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePlugin.java
@@ -98,7 +98,7 @@ static class ModifyResponseDecorator extends ServerHttpResponseDecorator {
         @NonNull
         public Mono<Void> writeWith(@NonNull final Publisher<? extends DataBuffer> body) {
             modifyResponseHeadersAndStatus();
-            if (!hasBodyModifications() || !isJsonResponse()) {
+            if (!hasBodyModifications()) {
                 return super.writeWith(body);
             }
             final Mono<DataBuffer> dataBufferMono = DataBufferUtils.join(body);
@@ -106,7 +106,14 @@ public Mono<Void> writeWith(@NonNull final Publisher<? extends DataBuffer> body)
                 byte[] bytes = new byte[dataBuffer.readableByteCount()];
                 dataBuffer.read(bytes);
                 DataBufferUtils.release(dataBuffer);
-                return WebFluxResultUtils.result(this.exchange, modifyBody(bytes));
+                if (isJsonResponse()) {
+                    return WebFluxResultUtils.result(this.exchange, modifyBody(bytes));
+                }
+                byte[] modifiedBody = tryModifyBody(bytes);
+                if (Objects.isNull(modifiedBody)) {
+                    return super.writeWith(Mono.just(this.getDelegate().bufferFactory().wrap(bytes)));
+                }
+                return WebFluxResultUtils.result(this.exchange, modifiedBody);
             });
         }
 
@@ -193,5 +200,16 @@ private String modifyBody(final String jsonValue) {
             }
             return context.jsonString();
         }
+
+        private byte[] tryModifyBody(final byte[] responseBody) {
+            try {
+                String bodyStr = modifyBody(new String(responseBody, StandardCharsets.UTF_8));
+                LOG.info("the body string {}", bodyStr);
+                return bodyStr.getBytes(StandardCharsets.UTF_8);
+            } catch (Exception e) {
+                LOG.debug("skip modify response body because response content type is not json", e);
+                return null;
+            }
+        }
     }
 }
diff --git a/shenyu-plugin/shenyu-plugin-modify-response/src/test/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePluginTest.java b/shenyu-plugin/shenyu-plugin-modify-response/src/test/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePluginTest.java
index 7aeeab8c0105..d879a3e6a101 100644
--- a/shenyu-plugin/shenyu-plugin-modify-response/src/test/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePluginTest.java
+++ b/shenyu-plugin/shenyu-plugin-modify-response/src/test/java/org/apache/shenyu/plugin/modify/response/ModifyResponsePluginTest.java
@@ -21,16 +21,21 @@
 import org.apache.shenyu.common.dto.RuleData;
 import org.apache.shenyu.common.dto.SelectorData;
 import org.apache.shenyu.common.dto.convert.rule.impl.ModifyResponseRuleHandle;
+import org.apache.shenyu.common.dto.convert.rule.impl.ParamMappingRuleHandle;
 import org.apache.shenyu.common.enums.PluginEnum;
 import org.apache.shenyu.plugin.api.ShenyuPluginChain;
 import org.apache.shenyu.plugin.api.context.ShenyuContext;
+import org.apache.shenyu.plugin.api.result.ShenyuResult;
+import org.apache.shenyu.plugin.api.utils.SpringBeanUtils;
 import org.apache.shenyu.plugin.modify.response.handler.ModifyResponsePluginDataHandler;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.junit.jupiter.MockitoExtension;
 import org.reactivestreams.Publisher;
 import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.context.ApplicationContext;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.mock.http.server.reactive.MockServerHttpRequest;
@@ -87,6 +92,11 @@ public void setUp() {
         exchange.getAttributes().put(Constants.CONTEXT, shenyuContext);
     }
 
+    @AfterEach
+    public void tearDown() {
+        SpringBeanUtils.getInstance().setApplicationContext(null);
+    }
+
     @Test
     public void testDoExecute() {
         when(chain.execute(any())).thenReturn(Mono.empty());
@@ -166,6 +176,28 @@ public void testWriteWithSkipsBodyRulesForNonJsonResponse() {
                 .verifyComplete();
     }
 
+    @Test
+    public void testWriteWithModifiesJsonBodyForNonJsonContentType() {
+        mockShenyuResult();
+        final ModifyResponseRuleHandle responseRuleHandle = new ModifyResponseRuleHandle();
+        final ParamMappingRuleHandle.ParamMapInfo addBodyKey = new ParamMappingRuleHandle.ParamMapInfo();
+        addBodyKey.setPath("$");
+        addBodyKey.setKey("added");
+        addBodyKey.setValue("true");
+        responseRuleHandle.setAddBodyKeys(Collections.singletonList(addBodyKey));
+        final ModifyResponsePlugin.ModifyResponseDecorator decorator =
+                new ModifyResponsePlugin.ModifyResponseDecorator(exchange, responseRuleHandle);
+        final MockServerHttpResponse response = (MockServerHttpResponse) exchange.getResponse();
+        response.getHeaders().setContentType(MediaType.TEXT_PLAIN);
+        final DataBuffer dataBuffer = response.bufferFactory().wrap("{\"value\":true}".getBytes(StandardCharsets.UTF_8));
+
+        StepVerifier.create(decorator.writeWith(Mono.just(dataBuffer))).verifyComplete();
+
+        StepVerifier.create(response.getBodyAsString())
+                .expectNext("{\"value\":true,\"added\":\"true\"}")
+                .verifyComplete();
+    }
+
     @Test
     public void testGetOrder() {
         assertEquals(modifyResponsePlugin.getOrder(), PluginEnum.MODIFY_RESPONSE.getCode());
@@ -180,4 +212,15 @@ public void testNamed() {
     public void testSkip() {
         assertFalse(modifyResponsePlugin.skip(exchange));
     }
+
+    private void mockShenyuResult() {
+        ApplicationContext applicationContext = mock(ApplicationContext.class);
+        @SuppressWarnings("unchecked")
+        ShenyuResult<Object> shenyuResult = (ShenyuResult<Object>) mock(ShenyuResult.class);
+        when(shenyuResult.format(any(ServerWebExchange.class), any())).thenAnswer(invocation -> invocation.getArgument(1));
+        when(shenyuResult.contentType(any(ServerWebExchange.class), any())).thenReturn(MediaType.APPLICATION_JSON);
+        when(shenyuResult.result(any(ServerWebExchange.class), any())).thenAnswer(invocation -> invocation.getArgument(1));
+        when(applicationContext.getBean(ShenyuResult.class)).thenReturn(shenyuResult);
+        SpringBeanUtils.getInstance().setApplicationContext(applicationContext);
+    }
 }