Screen lighting test system

The invention discloses a screen lighting test system. The screen lighting test system comprises a test power supply box, a plurality of test boards and a plurality of connection detection modules, the test power supply box comprises a plurality of signal output ports; the test board comprises signal receiving ports, and the signal receiving ports are connected with the signal output ports of the test power supply box in a one-to-one correspondence manner. Wherein the connection detection module is electrically connected with the signal output port through the signal receiving port, and the connection detection module is used for detecting the connection condition of the signal receiving port and the signal output port and displaying the connection condition. Due to the existence of the connection detection module, a tester can visually observe the communication relation between the signal output port of the test power supply box and the test board, the situation that screen lighting test is carried out under