System functions: (1) Registration management: Add patient registration information and query patient registration information. (2) Pricing and charging management: price and charge statistics on prescriptions prescribed by doctors to patients, and query and manage pricing and charging information. (3) Hospitalization management: register patient admission information, process patient discharge, and query patient hospitalization information. (4) Drug warehouse management: add new drug information, query drug information, adjust drug names and prices and other information. (5) User management: You can set whether each user has the permission to use a certain function (6) System management: You can set the system login password, system description, etc. System features: (1) Log in and add the picture verification code for identity verification, and the password is encrypted by md5 hash. (2) The system uses beautified menus and GridView controls (3) Optimize database design and solve data consistency problem (4) The program uses the three-layer architecture idea and is designed using a completely object-oriented thinking method. (5) The complete authority management mechanism database is in the DB_51aspx folder. The login user name and password are 51aspx.