The present invention provides a punching device with a filtering function, and the punching device with a filtering function comprises a grip portion, a barrel portion and a nozzle portion； the grip portion comprises a triggering element, a control element, a pumping element, a guiding tube and a filter tube One end of the triggering component is disposed on a side of the gripping portion, and the control component is coupled to one end of the triggering component. The pumping component is located inside the gripping portion and is coupled to the control component. One end of the guiding tube is coupled to the pumping component, and the filter tube is One end is connected to one end of the grip portion, and the filter tube comprises a filter hole and a nano silver ceramic filter unit, wherein the filter hole is disposed through the tube wall of the filter tube and the other end of the filter tube, and the nano silver ceramic filter unit is disposed at The inside of the filter tube is connected to one end of the grip portion, and one end of the barrel portion is recessed to form an accommodating space, and the other end of the guide tube and the other end of the filter tube are located in the accommodating space. And the drum portion includes a water guiding hole penetratingly disposed at a side wall of the drum portion； one end of the nozzle portion is disposed at the other end of the grip portion, and one end of the nozzle portion is coupled to the pumping member, The nozzle includes a water spray hole at the other end of the nozzle portion； wherein, when the accommodating space includes a water body and filters the water body through the filter tube, and when the user triggers the triggering component of the grip portion, the control component generates a driving signal correspondingly, and the pumping component The water body is drawn through the guiding tube according to the driving signal, and the water body is guided to the nozzle portion to be ejected via th
