The invention belongs to the technical field of dumbbell pins, and in particular relates to a factory strength test device of a dumbbell pin. The factory strength test device of the dumbbell pin comprises an upper tyre and a lower tyre; the upper tyre and the lower tyre are glidingly connected relatively; the upper tyre and the lower tyre are each provided with a circular hole; the dumbbell pin can be put in the circular hole; the dumbbell pin simulates an actual working condition, is arranged on the test device, and located by a clamping block and a limiting pin; a security baffle is leftwardpushed to the left end along a sliding groove; then, pressurization is carried out by a pressure machine till a dumbbell is broken by pulling; the numerical value of the pressure machine as the breaking strength of the dumbbell is recorded; the dumbbell test device can test the breaking strength of the dumbbell more precisely; strong data is provided for designing a scraper conveyer; the large-scale breakage accident of the dumbbell due to insufficient strength of the dumbbell can be avoided; the after cost is also reduced while the customer satisfaction is increased; and simultaneously, material waste due to excessive design is also avoided.