The invention discloses a non-interruption screen changing device which comprises a machine head, wherein the machine head is connected with a fixing rack; a hydraulic cylinder is arranged on and movably connected with the fixing rack; and the hydraulic cylinder can moved on the fixing rack. The device has the following advantages that the device is simple in structure; through a non-interruption screen changing technology, filter screens can be replaced without interrupting production, so that the labor and the time are saved; the product performance is stable; the effective filter time is increased; and the production cost is lowered.