Authentication method, authentication device, authentication system and treatment equipment

The invention discloses an authentication method, an authentication device, an authentication system and treatment equipment. The authentication method comprises the steps of reading server information which is preset by a local machine, automatically establishing communication connection according to the server information in a wireless communication manner; and initiating self authentication by the treatment equipment, wherein self authentication comprises reading a global unique identification code and a product serial number which are pre-stored by the local machine; encrypting the global unique identification code and the product serial number which are stored in the treatment equipment, and transmitting the encrypted global unique identification code and the product serial number to a server for requesting self authentication; confirming a self authentication result according to information which returns from the server; if self authentication passes, starting data transmission with the server; and if self authentication fails, disconnecting communication connection with the server. The authentication method, the authentication device, the authentication system and the treatment equipment reduce operation difficulty and complexity in identity authentication.