diff --git a/README.md b/README.md
index ced52cf29f3a9abd00756a31a4aec253b0c71c2a..7dee734ee5aa6f8e0a69795dc4f2568a6c7aa715 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,7 @@ TinySTL
 	* advance：100%
 	* sort：100%
 	* generate：100%
+	* generate_n：100%
 	* distance：100%
 * 其他组件：
     * circular_buffer：100%   
diff --git a/TinySTL/Algorithm.h b/TinySTL/Algorithm.h
index b1c8333aaebdcf8745a7e1ca75d153f93a39ee1c..8f79f2c533b48b2272f5e3f74a3e2f2fa85f1e60 100644
--- a/TinySTL/Algorithm.h
+++ b/TinySTL/Algorithm.h
@@ -544,6 +544,15 @@ namespace TinySTL{
 			*first = func();
 		}
 	}
+	//********** [generate_n] ******************************
+	//********* [Algorithm Complexity: O(N)] ****************
+	template <class OutputIterator, class Size, class Generator>
+	void generate_n(OutputIterator first, Size n, Generator gen){
+		while (n--){
+			*first = gen();
+			++first;
+		}
+	}
 	//********** [distance] ******************************
 	//********* [Algorithm Complexity: O(N)] ****************
 	template<class InputIterator>
diff --git a/TinySTL/Test/AlgorithmTest.cpp b/TinySTL/Test/AlgorithmTest.cpp
index b130c4a00452e9198c8a31ffda297808bbeafb6c..fe1c09bd8c48167ff78859c4a0952433940527c7 100644
--- a/TinySTL/Test/AlgorithmTest.cpp
+++ b/TinySTL/Test/AlgorithmTest.cpp
@@ -221,6 +221,14 @@ namespace TinySTL{
 				std::generate(std::begin(arr2), std::end(arr2), func);
 			}
 			assert(TinySTL::Test::container_equal(arr1, arr2));
+
+			int n1 = 0, n2 = 0;
+			auto gen1 = [&n1](){return n1++; };
+			auto gen2 = [&n2](){return n2++; };
+			int arr3[100], arr4[100];
+			TinySTL::generate_n(arr3, 100, gen1);
+			std::generate_n(arr4, 100, gen2);
+			assert(TinySTL::Test::container_equal(arr3, arr4));
 		}
 		void testDistance(){
 			TinySTL::list<int> l(10, 0);