The invention provides a dialyzer weighing device. The dialyzer weighing device comprises a holder, a lift member which is movably arranged on the holder, and can move in horizontal and vertical directions, a driving mechanism which is in drive connection with the lift member, a weighing unit which is arranged on the holder and is located on the moving path of the lift member to weigh an article on the lift member. According to the technical scheme provided by the invention, the problems of large weighing data error and low efficiency in the prior art are solved.