The present application relates to the technical field of magnetic track brake, and in particular to a testing device for electromagnetic attraction force of a magnetic track brake, comprising a steel rail, a force measuring rail block, a guide groove, an elastic force measuring device and a pull machine, wherein the steel rail consists of segmented steel rails, the groove body of the guide groove is vertically provided between the segmented steel rails, the limiting plate is fixed on an inner wall of the groove body, the force measuring rail block and the elastic force measuring device are both located inside the groove body, and a bottom of the force measuring rail block is connected to the elastic force measuring device and the pull machine through an intermediate connection rod.