Elevator door lock electric switch pre-diagnosis system and method

The invention relates to an elevator door lock electric switch pre-diagnosis system and method. The elevator door lock electric switch pre-diagnosis system comprises a first electric switch, second electric switches, an elevator main control device, a prompt device, a first detection device and second detection devices. The first electric switch is connected with a car door lock. A plurality of second electric switches are arranged, and a landing door lock of each floor is connected with one second electric switch corresponding to the landing door lock. The first detection device is connected with the first electric switch. A plurality of second detection devices are arranged, and each second electric switch is connected with one second detection device corresponding to the second electric switch. The elevator main control device is connected with the first detection device, the second detection devices and the prompt device. Pre-diagnosis can be made before the electric switches of the elevator door lock fail, the situation that after electric switch connection fails completely, treatment is carried out when an elevator breaks down can be avoided, the fault rate of the elevator is greatly reduced, and the use safety of the elevator is prompted.