diff --git a/memtest.c b/memtest.c
new file mode 100644
index 0000000..3bcfea3
--- /dev/null
+++ b/memtest.c
@@ -0,0 +1,247 @@
+#define __LIBRARY__
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include "pthread.h"
+
+#define TIMES 1
+#define THREAD 2
+#define GO 3
+#define STATUS 4
+#define ABORT 5
+#define EXIT 6
+
+struct com
+{
+	char string[20];
+	int value;
+	int number;
+};
+
+struct com command;
+
+struct thread_args
+{
+	char* start_addr;
+	int size;
+	int times;
+	int finished;
+	int abort;
+};
+
+struct thread_args args[64]={};
+pthread_t threads[64] = {};	
+int fail = 0;
+
+void* test_mem(void *thread_arg);
+int get_command(void);
+
+int main()
+{
+	int i,j,k;
+	int first=0,second=0,third=0;
+	int num_times = 0;
+	int num_thread = 0;
+	int size=0;
+	void *value_ptr[64]={};
+	char* start_addr = NULL;
+	char* mem_addr = (char *)malloc(0x100000);   
+	if(!mem_addr)
+	{
+		printf("Error:Memory is not enough!\n");
+		exit(0);
+	}
+
+	while(1)
+	{
+		printf(">>>");
+		fflush(stdout);
+		get_command();
+		switch (command.value)
+		{
+			case TIMES:
+				num_times = command.number;
+				printf("Each memory unit will be tested by %d times.\n",num_times);
+				first  = 1;
+				continue;
+			case THREAD:
+				num_thread = command.number;
+				size = 0x100000 / num_thread;
+				start_addr = mem_addr;
+				for(i=0;i<num_thread;i++)       /*线程参数初始化*/
+			    {
+					args[i].start_addr = start_addr;
+					args[i].size = size;
+					args[i].finished = 0;
+					args[i].abort = 0;
+					start_addr = start_addr + size;	
+				}
+				args[num_thread-1].size += (0x100000 % num_thread);
+				printf("%d threads will be set.\n",num_thread);
+				second = 1;
+				continue;
+			case GO:
+				if(first == 1 && second == 1)
+			    {
+					for(i=0;i<num_thread;i++)       /*对线程参数初始化，并调用pthread_create创建工作线程*/
+					{
+						args[i].finished = 0;
+						args[i].times = num_times;
+						pthread_create(&threads[i],NULL,(void *)test_mem,(void *)(&(args[i])));
+					}
+					third = 1;
+					continue;
+				}
+				else
+			    {
+					printf("测试参数不完成，线程初始化未完成！\n");
+					return -1;
+				}
+			case STATUS:                            /*打印线程执行信息*/
+				if(third == 1)
+			    {
+					for(i=0;i<num_thread;i++)
+						printf("Thread:%d, testSize:%d, testedSize:%d, Ratio:%f\n", i, args[i].size, args[i].finished, (float)args[i].finished / (float)args[i].size);
+					continue;
+				}
+				continue;
+			case ABORT:
+				if(second == 1)
+			    {
+					for(i=0;i<num_thread;i++)
+						args[i].abort = 1;
+					continue;
+				}
+			case EXIT:                              /*停止测试并退出程序*/
+				if(second == 1 && third == 1)
+			    {
+					for(i=0;i<num_thread;i++)
+						args[i].abort = 1;
+					for(i=0;i<num_thread;i++)
+						pthread_join(threads[i],&value_ptr[i]);	
+					
+					return 0;
+				}
+				else
+					return 0;
+			default:
+				continue;
+		}
+	}
+
+	return 0;
+}
+
+void* test_mem(void *thread_arg)
+{
+	int i,j,k;
+	unsigned int seed=28;
+	char data[5] = {};
+	char* addr = NULL;
+	struct thread_args *arg;
+
+	arg = (struct thread_args *)thread_arg;
+	addr = arg->start_addr;
+
+	fail = 0;
+	srand(seed);
+	data[0] = 0;                     /* 对5种数据进行测试 */
+	data[1] = 0xFF;
+	data[2] = 0x55;
+	data[3] = 0xAA;
+	data[4] = (char)rand();
+
+	for(i=0;i<(arg->size);i++)
+	{
+		for(j=0;j<(arg->times);j++)
+		{
+			for(k=0;k<5;k++)
+			{
+				(*addr) = data[k];
+				if((*addr) != data[k])
+				{
+					fail = 1;
+					pthread_exit(&fail);
+				}
+			}
+		}
+		if(arg->abort == 1)
+			pthread_exit(&fail);
+		(arg->finished)++;
+		addr++;
+	}
+	
+	pthread_exit(&fail);
+	return (void *)(&fail);
+}
+
+int get_command(void)            /*读取命令函数*/
+{
+	int i;
+	char tmp[20]={};
+	int num=0;
+
+	for(i=0;i<20;i++)                   /*命令数据结构初始化*/
+		command.string[i] = '\0';
+	command.value = 0;
+	command.number = 0;
+	
+	scanf(" %s",tmp);
+	
+	if(!strcmp(tmp,"times"))
+	{
+		scanf(" %d",&num);
+		if(num <= 0 || num > 1000000)
+		{
+			printf("测试次数参数非法!\n");
+			command.value = 0;
+			return -1;
+		}
+		command.number = num;
+		command.value = TIMES;
+		return 0;
+	}
+	if(!strcmp(tmp,"thread"))
+	{
+		scanf(" %d",&num);
+		if(num <= 0 || num > 10)
+		{
+			printf("线程个数参数非法!\n");
+			command.value = 0;
+			return -1;
+		}
+		command.number = num;
+		command.value = THREAD;
+		return 0;
+	}
+	if(!strcmp(tmp,"go"))
+	{
+		command.value = GO;
+		return 0;
+	}
+	if(!strcmp(tmp,"status"))
+	{
+		command.value = STATUS;
+		return 0;
+	}
+	if(!strcmp(tmp,"abort"))
+	{
+		command.value = ABORT;
+		return 0;
+	}
+	if(!strcmp(tmp,"exit"))
+	{
+		command.value = EXIT;
+		return 0;
+	}
+	if(!strcmp(tmp,""))
+	{
+		command.value = 0;
+		return -1;
+	}
+
+	printf("命令非法!\n");
+	command.value = 0;
+	return -1;
+}