Dark box device and detection method thereof for detecting screen of terminal

The invention discloses a dark box device for detecting a screen of a terminal. The dark box device comprises a box body, a bearing assembly, a position conversion assembly, a sensor and a controller;the bearing assembly is used for bearing the terminal, and the position conversion assembly is used for driving the bearing assembly to convert between a screen test position and a light leakage detection position; the sensor is used for detecting whether the screen completes a preset test phase or not, and the preset test phase includes a screen positioning phase and a screen test phase; and thecontroller is correspondingly connected with the sensor and the position conversion assembly in a communication mode, the controller is used for controlling the position conversion assembly to drivethe bearing assembly to the light leakage detection position after the screen test phase is completed. According to the dark box device and the detection method thereof, during the process of converting to the light leakage det