diff --git a/solution/142.Linked List Cycle II/README.md b/solution/142.Linked List Cycle II/README.md
index 4a76e66bc3b64..b122836447164 100644
--- a/solution/142.Linked List Cycle II/README.md	
+++ b/solution/142.Linked List Cycle II/README.md	
@@ -67,4 +67,32 @@ public class Solution {
         
     }
 }
+```
+
+#### CPP
+
+```C++
+class Solution {
+public:
+    ListNode *detectCycle(ListNode *head) {
+        if(head == NULL)return NULL;
+        ListNode *fast = head;
+        ListNode *slow = head;
+        while(fast != NULL && fast->next != NULL){
+            fast = fast->next->next;
+            slow = slow->next;
+            
+            if(fast == slow){
+                slow = head;
+                while(slow != fast){
+                    fast = fast->next;
+                    slow = slow->next;
+                }
+                return fast;
+            }
+        }
+        return NULL;//无环
+    }
+};
+
 ```
\ No newline at end of file
diff --git a/solution/142.Linked List Cycle II/Solution.cpp b/solution/142.Linked List Cycle II/Solution.cpp
new file mode 100644
index 0000000000000..c64fa506f64c9
--- /dev/null
+++ b/solution/142.Linked List Cycle II/Solution.cpp	
@@ -0,0 +1,22 @@
+class Solution {
+public:
+    ListNode *detectCycle(ListNode *head) {
+        if(head == NULL)return NULL;
+        ListNode *fast = head;
+        ListNode *slow = head;
+        while(fast != NULL && fast->next != NULL){
+            fast = fast->next->next;
+            slow = slow->next;
+            
+            if(fast == slow){
+                slow = head;
+                while(slow != fast){
+                    fast = fast->next;
+                    slow = slow->next;
+                }
+                return fast;
+            }
+        }
+        return NULL;//无环
+    }
+};