diff --git a/modules/datasets/qianxun.py b/modules/datasets/qianxun.py
index df9149a..c1aa096 100644
--- a/modules/datasets/qianxun.py
+++ b/modules/datasets/qianxun.py
@@ -25,7 +25,10 @@ class QianXun(Query):
             url = f'https://www.dnsscan.cn/dns.html?' \
                   f'keywords={self.domain}&page={num}'
             resp = self.post(url, data)
-            self.subdomains = self.collect_subdomains(resp)
+            subdomains = self.match_subdomains(resp)
+            if not subdomains:  # 没有发现子域名则停止查询
+                break
+            self.subdomains = self.subdomains.union(subdomains)
             if '<div id="page" class="pagelist">' not in resp.text:
                 break
             if '<li class="disabled"><span>&raquo;</span></li>' in resp.text:
diff --git a/modules/datasets/sitedossier.py b/modules/datasets/sitedossier.py
index fc2de44..728815b 100644
--- a/modules/datasets/sitedossier.py
+++ b/modules/datasets/sitedossier.py
@@ -23,7 +23,7 @@ class SiteDossier(Query):
             url = f'{self.addr}{self.domain}/{self.page_num}'
             resp = self.get(url)
             subdomains = self.match_subdomains(resp)
-            if not subdomains:  # 搜索没有发现子域名则停止搜索
+            if not subdomains:  # 没有发现子域名则停止查询
                 break
             self.subdomains = self.subdomains.union(subdomains)
             # 搜索页面没有出现下一页时停止搜索
diff --git a/modules/datasets/spyse_api.py b/modules/datasets/spyse_api.py
index 2c1730d..bb634ca 100644
--- a/modules/datasets/spyse_api.py
+++ b/modules/datasets/spyse_api.py
@@ -27,7 +27,7 @@ class SpyseAPI(Query):
                 return
             json = resp.json()
             subdomains = self.match_subdomains(str(json))
-            if not subdomains:  # 搜索没有发现子域名则停止搜索
+            if not subdomains:  # 没有发现子域名则停止查询
                 break
             self.subdomains = self.subdomains.union(subdomains)
             offset += limit
diff --git a/modules/datasets/wzpc.py b/modules/datasets/wzpc.py
index 3c84ad9..9db0dcf 100644
--- a/modules/datasets/wzpc.py
+++ b/modules/datasets/wzpc.py
@@ -32,6 +32,8 @@ class WZPCQuery(Query):
             if not resp:
                 break
             subdomains = self.match_subdomains(resp.text)
+            if not subdomains:  # 没有发现子域名则停止查询
+                break
             self.subdomains = self.subdomains.union(subdomains)
             if not subdomains:
                 break
diff --git a/modules/datasets/ximcx.py b/modules/datasets/ximcx.py
index 7ddf768..641b99b 100644
--- a/modules/datasets/ximcx.py
+++ b/modules/datasets/ximcx.py
@@ -17,11 +17,7 @@ class Ximcx(Query):
         self.proxy = self.get_proxy(self.source)
         data = {'domain': self.domain}
         resp = self.post(self.addr, data=data)
-        if not resp:
-            return
-        json = resp.json()
-        subdomains = self.match_subdomains(str(json))
-        self.subdomains = self.subdomains.union(subdomains)
+        self.subdomains = self.collect_subdomains(resp)
 
     def run(self):
         """