diff --git a/main.c b/main.c
index 6fb49e2..be9b0f7 100644
--- a/main.c
+++ b/main.c
@@ -57,6 +57,18 @@ int main(int argc, char *argv[]) {
 					return 0;
 				}
 				break;
+			case '6':
+				demand();
+				break;
+			case '7':
+				if(cpassword()!=1){
+					out();
+					return 0;
+				}
+				break;
+			case '8':
+				out();
+				return 0; 
 			default:
 				system("cls");
 				end();
@@ -86,6 +98,9 @@ void menus()
 	printf("\t\t\t\t*--------3 学生基本信息保存--------------*\n");
 	printf("\t\t\t\t*---4 学生基本信息删除(此选项须输入密码)-*\n");
 	printf("\t\t\t\t*---5 学生基本信息修改(此选项须输入密码)-*\n");
+	printf("\t\t\t\t*--------6 学生基本信息查询--------------*\n");
+	printf("\t\t\t\t*------------7 密码修改------------------*\n");
+	printf("\t\t\t\t*------------8 退出系统------------------*\n");
 	printf("\t\t\t\t******************************************\n\n");
 }
 
@@ -271,6 +286,100 @@ int alter()
 	return 1;
 }
 
+void demand()
+{
+	int choice;
+	while(1){
+		while(1){
+			system("cls");
+			_menus();
+			printf("请输入正确选项！\n");
+			scanf("%d",&choice);
+			if(choice<6&&choice>0)break;
+		}
+		struct node tem[1000];
+		FILE *fp;
+		fp=fopen("data.txt","r");
+		if(fp==NULL){
+			printf("文件打开失败！\n");
+			end();
+			return ;
+		}
+		int i=0;
+		while(fscanf(fp,"%s%s%s%d%s",tem[i].stnum,tem[i].stname,tem[i].sex,&tem[i].age,tem[i].detail)!=EOF){
+			i++;
+		}
+		fclose(fp);
+		int sum=i;
+		char d[20];
+		int c;
+		int fa=1;
+		switch(choice){
+			case 1:
+				printf("请输入学号:");
+				scanf("%s",d);
+				printf("\n");
+				for(int i=0;i<sum;i++){
+					if(strcmp(d,tem[i].stnum)==0){
+						printf("学号:%s\t姓名:%s\t性别:%s\t年龄:%d\t备注:%s\n",tem[i].stnum,tem[i].stname,tem[i].sex,tem[i].age,tem[i].detail);
+						fa=0;
+					}
+				}
+				end();
+				break;
+			case 2:
+				printf("请输入姓名:");
+				scanf("%s",d);
+				printf("\n");
+				for(int i=0;i<sum;i++){
+					if(strcmp(d,tem[i].stname)==0){
+						printf("学号:%s\t姓名:%s\t性别:%s\t年龄:%d\t备注:%s\n",tem[i].stnum,tem[i].stname,tem[i].sex,tem[i].age,tem[i].detail);
+						fa=0;
+					}
+				}
+				end();
+				break;
+			case 3:
+				printf("请输入性别:");
+				scanf("%s",d);
+				printf("\n");
+				for(int i=0;i<sum;i++){
+					if(strcmp(d,tem[i].sex)==0){
+						printf("学号:%s\t姓名:%s\t性别:%s\t年龄:%d\t备注:%s\n",tem[i].stnum,tem[i].stname,tem[i].sex,tem[i].age,tem[i].detail);
+						fa=0;
+					}
+				}
+				end();
+				break;
+			case 4:
+				printf("请输入年龄:");
+				scanf("%d",&c);
+				printf("\n");
+				for(int i=0;i<sum;i++){
+					if(c==tem[i].age){
+						printf("学号:%s\t姓名:%s\t性别:%s\t年龄:%d\t备注:%s\n",tem[i].stnum,tem[i].stname,tem[i].sex,tem[i].age,tem[i].detail);
+						fa=0;
+					}
+				}
+				end();
+				break;
+			case 5:
+				return ;
+		}
+		if(fa==0)printf("此次查询无有效信息！\a\n");
+	}
+}
+
+void _menus()
+{
+	printf("\t\t\t\t\t********选择你需要的查询********\n");
+	printf("\t\t\t\t\t*--------1 按学号查询----------*\n"); 
+	printf("\t\t\t\t\t*--------2 按姓名查询----------*\n"); 
+	printf("\t\t\t\t\t*--------3 按性别查询----------*\n"); 
+	printf("\t\t\t\t\t*--------4 按年龄查询----------*\n");
+	printf("\t\t\t\t\t*--------5 退出查询------------*\n\n");  
+}
+
 void _menus2()
 {
 	printf("\t\t\t\t\t*********请选择修改方式*******\n");
@@ -414,4 +523,3 @@ int password()
 	}
 	return 0;
 }
-
diff --git a/main.exe b/main.exe
index 372bee0..26d5674 100644
Binary files a/main.exe and b/main.exe differ
diff --git a/main.o b/main.o
index a4628b5..ef53d4c 100644
Binary files a/main.o and b/main.o differ
diff --git a/user.txt b/user.txt
index 7c7034c..e69de29 100644
--- a/user.txt
+++ b/user.txt
@@ -1 +0,0 @@
-zq19991001 1234
\ No newline at end of file
diff --git a/璇捐.exe b/璇捐.exe
index 87b241c..5c337f3 100644
Binary files a/璇捐.exe and b/璇捐.exe differ
diff --git a/璇捐.layout b/璇捐.layout
index 642ba75..1e31302 100644
--- a/璇捐.layout
+++ b/璇捐.layout
@@ -6,7 +6,7 @@ Open=1
 Top=1
 CursorCol=2
 CursorRow=101
-TopLine=87
+TopLine=51
 LeftChar=1
 [Editor_1]
 Open=1