This key type coding lock which abandons the defect of common mechanical coding lock that the code is judged by feeeling and sound, there is automatic code removing reset function in design which all of these functions are special functions that current electronic locks or common mechanical coding locks never own. This lock is used as the lock for safety door, interior door, glass door, office building, safe deposit door and bank cabinet. It is characterized by graceful and generous style and elaborate manufacturing. There are many materials for panel materials, stainless steel, zinc alloy and others, and it can meet the requirements of different consumers.