Vehicle-mounted filter

The utility model relates to the technical field of filters, in particular to a vehicle-mounted filter. The problems that a filter screen is not easy to disassemble and replace and filter holes are easy to block are solved. The device comprises a device body, filter channels are formed in the two ends of the middle of the device body in a penetrating mode, filter screens are detachably connected into the filter channels, filter holes are formed in the filter screens, supports are connected to the bottoms of the filter screens in the circumferential direction, dredging nets are slidably connected between the supports, dredging pieces are arranged on the dredging nets, and the dredging nets and the dredging pieces are coaxially arranged. And when the dredging net moves to the filter net in place, the dredging piece penetrates through the filter hole. The device is quick to mount, the filter screen is convenient to replace, and the use effect is improved; after the filter screen is detached, the filter screen is