diff --git a/.gitignore b/.gitignore
index 07bebb9d96edde9f1c545fb26885357b4a4e3ab8..2a7dfb4f921c7c7b75ee6ca7d4b173b1a7c118ef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,5 @@
 build/*
-!build/.gitkeep
\ No newline at end of file
+!build/.gitkeep
+*.sh
+*.out
+
diff --git a/src/GeneticAlgorithm/Multithreading.cpp b/src/GeneticAlgorithm/Multithreading.cpp
index 3019de6d9ad366052f365029f06446f29c521fc1..403b0d390b83087bd119630ab798ff724fdf56ac 100644
--- a/src/GeneticAlgorithm/Multithreading.cpp
+++ b/src/GeneticAlgorithm/Multithreading.cpp
@@ -37,9 +37,9 @@ namespace GeneticAlgorithm {
         long double r
     ) {
         using namespace std;
-        jthread** threads = new jthread*[this->threadNumber];
+        thread** threads = new thread*[this->threadNumber];
         for (unsigned long i = 0; i < this->threadNumber; i++) {
-            threads[i] = new jthread([](
+            threads[i] = new thread([](
                 MainProcess* process,
                 unsigned long numberOfChromosome,
                 unsigned long lengthOfChromosome,
@@ -54,6 +54,7 @@ namespace GeneticAlgorithm {
             }, this->process[i], numberOfChromosome, lengthOfChromosome, min, max, maxLoop, stopFitness, keep, r);
         }
         for (unsigned long i = 0; i < this->threadNumber; i++) {
+            threads[i]->join();
             delete threads[i];
         }
         delete[] threads;
@@ -66,9 +67,9 @@ namespace GeneticAlgorithm {
         long double r // 基因突变的概率
     ) {
         using namespace std;
-        jthread** threads = new jthread*[this->threadNumber];
+        thread** threads = new thread*[this->threadNumber];
         for (unsigned long i = 0; i < this->threadNumber; i++) {
-            threads[i] = new jthread([](
+            threads[i] = new thread([](
                 MainProcess* process,
                 unsigned long maxLoop,
                 long double stopFitness,
@@ -79,6 +80,7 @@ namespace GeneticAlgorithm {
             }, this->process[i], maxLoop, stopFitness, keep, r);
         }
         for (unsigned long i = 0; i < this->threadNumber; i++) {
+            threads[i]->join();
             delete threads[i];
         }
         delete[] threads;
diff --git a/src/main.cpp b/src/main.cpp
index 5dbea1895d3df3f1084e5e9ff0a9248063f7ff98..d96b6ca5c225db54069646321dab7baa1bc67085 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,7 +5,6 @@
  *
  */
 #include <iostream>
-#include "GeneticAlgorithm.h"
 #include "GeneticAlgorithm/MainProcess.h"
 
 using namespace GeneticAlgorithm;