Abstract: A method, device and terminal for identifying LCD screens can be automatically compatible with a plurality of LCD screens. The device includes a storage module, a voltage regulation module and an identification module. The storage module stores the driver chip parameters of the LCD screens. The voltage regulation module regulates the output voltages of the LCD screens into a processing range of the identification module according to a fixed voltage when accessing to the LCD screens, so as to acquire a regulated voltage. The identification module stores a corresponding relation between the driver chip parameter and the regulated voltage of the corresponding type of LCD screen, and receives a regulated voltage of the voltage regulation module, and then finds the driver chip parameter corresponding to the regulated voltage according to the regulated voltage and the preset corresponding relation.