Data line swing testing device

The utility model relates to the technical field of data line detection, and discloses a data line swing test device, which comprises a test fixture and a test host, the test fixture comprises a base and a mounting plate fixed on the front side of the base, two test female seats corresponding to data line interfaces are fixed on the front side of the mounting plate, the test female seats are connected with the test host, and the test host is connected with the test fixture. A swing detection device for detecting swing angles in four directions is arranged on the periphery of the mounting plate, and comprises four groups of infrared induction devices positioned on the four side edges of the mounting plate, indication devices positioned on the peripheries of the two test female seats and an external single chip microcomputer light sensation type swing controller; the infrared sensing device and the indicating device are both connected with the input end of the single-chip microcomputer light sensation type swin