Test box grid disc and manufacturing method

The invention belongs to the technical field of test equipment, and discloses a test box grid disc and a manufacturing method thereof, and the test box grid disc comprises a frame, longitudinal rods and transverse rods. The frame comprises two longitudinal edge rods and two transverse edge rods, the longitudinal edge rods extend in the first direction, the transverse edge rods extend in the second direction perpendicular to the first direction, and the two longitudinal edge rods and the two transverse edge rods are connected end to end to define a rectangular structure. The longitudinal rod extends in the first direction, the two ends of the longitudinal rod are fixedly connected with the two transverse edge rods respectively, a plurality of first splicing grooves formed in the extending direction of the longitudinal rod at intervals are formed in one side of the longitudinal rod, and the first splicing grooves extend in the second direction. The transverse rod extends in the second direction, the two ends of