The invention discloses a handrail load testing device which comprises a beam structure with the adjustable height. A handrail is perpendicularly arranged in the beam structure. A beam structure is fixedly connected to the top of the handrail. The bottom of the handrail is fixedly connected with a handrail bottom connecting piece. The handrail bottom connecting piece is fixedly connected with the beam structure. A testing supporting rod is fixedly arranged in the beam structure. The testing supporting rod is located at the left part of the handrail. A first load testing element is fixedly connected to the upper end of the left side of the testing supporting rod. The right end of the first load testing element makes contact with the left side wall of the handrail. A loading block is arranged at the position, corresponding to the first load testing element, of the right side of the handrail. The left end of the loading block makes contact with the right side wall of the handrail. The right end of the second load testing element is connected with a power obtaining component. The handrail load testing device can easily and reliably perform static load testing on the bottom connecting components of handrails and the handrails of different testing conditions and type specifications and remarkably lower the handrail static load testing cost.