The invention relates to a bar code electronic cipher device with calculation function, which is object to provide a more secure and reliable cipher device and cipher code operation method. The electronic cipher device includes a casing (70), a keyboard (50), a liquid crystal display module (20), a Hall switch, and a microprocessor. The device can translate and compile 3-12 bit of positive integers into cross, when the cipher device is entered in the cipher code verification system for performing identification verification, the Hall switch of the cipher device obtains the magnetic field induction and feeds back a low potential signal to the microprocessor, the microprocessor switches the displayed contents of the liquid crystal display module (20), translated and compiled bar code are displayed on the panel of the liquid crystal display module (20), the cipher code verification system scanning the bar code and then inter-compares the encrypted message, the process of the entire identification verification is completed, the entire process is executed secretly, thereby effectively ensuring the safety of the encrypted message.