The invention provides a detection device of a
thin film transistor-
liquid crystal display (TFT-LCD) substrate, which comprises a
machine main body, a circuit board, a plurality of motors and a plurality of probes, wherein the circuit board is arranged on the
machine main body, the plurality of motors are arranged on the
machine main body, the plurality of probes are arranged on the motors, the motors and the probes are in one-to-one correspondence, the circuit board comprises a
programmable logic controller and a human-computer interaction terminal, the human-computer interaction terminal is electrically connected with the
programmable logic controller, the plurality of motors and the plurality of probes are electrically connected with the
programmable logic controller, the plurality of probes are arranged correspondingly to the positions of a panel detection
signal input ends of the TFT substrates of different sizes, and the programmable logic controller is used for driving the probes to rise and fall by the motors. The motors are used for controlling and driving the probe corresponding to the TFT substrate to be tested to rise so as to complete detection of the TFT substrate, therefore, the detection requirements of the TFT substrates of different sizes can be met, time of replacing a
detector in the prior art is saved, production cost is reduced, and the risk of collision generation during replacing the
detector in the prior art is avoided.