The invention provides a motion detection method, device and equipment. The motion detection method comprises steps of acquiring a plurality of sampling points of a samplings object in preset time, acquiring a reference benchmark value determining a motion state where the object stays, acquiring occurrence times of different motion states of the object corresponding to each sampling points according to the sampling points and the reference benchmark value, accumulating occurrence times of the same motion state, and designating a motion state having the most occurrence times as a current motion state of the target in the preset time. The motion state is one of a plurality of motion states and determined according to the object motion strength; and the reference benchmark is determined according to physiological parameters of a plurality of objects. The motion state of the object in the preset time can be measured, and motion rules of the object can be acquired, so object behaviors can be accurately learned and user experience effect can be improved.