A printer security control design method based on KEY takes KEY hardware as a carrier to achieve a function of burning embedded log-on information, password verification information, a safety verification procedure and the like on the KEY disc hardware. The printer security control design method based on the KEY includes: actively detecting all printing events of a printer, recording information such as KEY numbers, login names, printed file names, printing time, printer identification (ID) and manes and the like of the printing events of the printer, limiting the printing events which are not inserted with the safety verification KEY, not permitting to print, and recording actions of the printing events, permitting a user who inserts the safety verification KEY to print, recording insertion time, address and log-on information of the safety verification KEY, and completing printing event password verification by coordinating with the safety verification KEY. According to the printer security control design method based on the KEY, printing information records are effectively picked, all external printing requests are cut off, powerful source evidence and afterwards retrace are provided for safety of paper files spread in a company. The printer security control design method based on the KEY is suitable for security control of printing equipment with various types.