The invention relates to technical field of weak current devices and discloses a dustproof cooling weak current placement device. The dustproof cooling weak current placement device comprises a box body, rubber pads are fixedly connected to both sides of an inner wall of the box body, the bottoms of the two rubber pads are fixedly connected with an outer surface of the top of a supporting frame, supporting seats are fixedly connected to both sides of the bottom of the supporting frame, the bottom of the supporting frame is fixedly connected with the outer surface of the top of a supporting plate through the supporting seats, the middle of the outer surface of the top of the supporting plate is fixedly connected with a router, the bottom of the box body is fixedly connected with a bottom plate, the bottom of the bottom plate is fixedly connected with the top of a base, and a wire board and a cooling net are fixedly connected to the outer surfaces of both sides of the box body. According to the dustproof cooling weak current placement device, by means of the cooperative use of a locating plate, a through groove and a dustproof plate, the ventilation effect of a circuit board in the box body can be ensured, and a dustproof function is achieved at the same time to prevent foreign matters in the air from entering the box body to cause corrosion of the circuit board.