The invention relates to the technical field of information security, and provides an electronic commerce intelligent password key with a button and an implementation method for the electronic commerce intelligent password key. The intelligent password key comprises a universal serial bus (USB) plug, a keyboard and a built-in security encryption intelligent chip, wherein a digital keyboard, a power button, an unlocking button and a light emitting diode (LED) indicating lamp are arranged on the keyboard; the intelligent chip comprises a password processing module for processing the buttons, initializing a user personal identification number (PIN) code, modifying the user PIN code and checking the user PIN code, a USB data transmitting and receiving module for transmitting authentication information and confirming work of equipment, and an encryption and decryption module for encrypting and decrypting user authentication information. By an encryption storage mode, the user authentication information is prevented from being violently cracked; by a digital keyboard hardware authentication mode, the potential security hazards of keyboard Trojan horses and 'screen shot' password stealing Trojan horses are avoided; and therefore, the risk that the PIN code is stolen by the Trojan horse during authentication is reduced, and the intelligent password key is secure and reliable and is low in cost.