An input device with the fingerprint identity function and the fingerprint identity method, the device has the data storage function, it includes storage element, coordinate output circuit, a input control circuit, a fingerprint input interface and a micro controller. The fingerprint interface can input the character fingerprint data. The microcontroller contains a fingerprint identity module which can identify the fingerprint character data from the input interface and a unlock module which can unlock the storage element according to the unlock signal. So this can prevent anybody visiting the storage element by this function to protect the data at the input device, and the use of it is convenient, the users do not need to remember the complex password and forget the password or the password is stole.