diff --git a/leetcode/601-700/0633.Sum-of-Square-Numbers/README.md b/leetcode/601-700/0633.Sum-of-Square-Numbers/README.md
index d8ad1876d..f68c3e17d 100644
--- a/leetcode/601-700/0633.Sum-of-Square-Numbers/README.md
+++ b/leetcode/601-700/0633.Sum-of-Square-Numbers/README.md
@@ -1,28 +1,22 @@
 # [633.Sum of Square Numbers][title]
 
-> [!WARNING|style:flat]
-> This question is temporarily unanswered if you have good ideas. Welcome to [Create Pull Request PR](https://github.com/kylesliu/awesome-golang-algorithm)
-
 ## Description
+Given a non-negative integer `c`, decide whether there're two integers `a` and `b` such that a<sup>2</sup> + b<sup>2</sup> = c.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: c = 5
+Output: true
+Explanation: 1 * 1 + 2 * 2 = 5
 ```
 
-## 题意
-> ...
-
-## 题解
+**Example 2:**
 
-### 思路1
-> ...
-Sum of Square Numbers
-```go
 ```
-
+Input: c = 3
+Output: false
+```
 
 ## 结语
 
diff --git a/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution.go b/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution.go
index d115ccf5e..30e7f49c3 100644
--- a/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution.go
+++ b/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution.go
@@ -1,5 +1,20 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+import "math"
+
+func Solution(c int) bool {
+	end := int(math.Sqrt(float64(c)))
+	x := 0
+	for x <= end {
+		r := x*x + end*end
+		if r == c {
+			return true
+		}
+		if r < c {
+			x++
+			continue
+		}
+		end--
+	}
+	return false
 }
diff --git a/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution_test.go b/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution_test.go
index 14ff50eb4..167c7a03b 100644
--- a/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution_test.go
+++ b/leetcode/601-700/0633.Sum-of-Square-Numbers/Solution_test.go
@@ -10,12 +10,12 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
+		inputs int
 		expect bool
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", 5, true},
+		{"TestCase2", 3, false},
+		{"TestCase3", 4, true},
 	}
 
 	//	开始测试
@@ -30,10 +30,10 @@ func TestSolution(t *testing.T) {
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }