Printed circuit board etching device

The utility model relates to the technical field of circuit board production, and discloses a printed circuit board etching device which comprises a first stand column and a second stand column, the top of the first stand column and the top of the second stand column are jointly connected with a cross beam, a sliding frame is arranged on the surface of the cross beam in a sliding mode, and an air cylinder is fixedly connected to the lower surface of the sliding frame. A circuit board fixing structure is arranged at the lower end of the air cylinder, and an etching pool is arranged on the lower side of the cross beam. The upper clamping groove and the lower clamping groove are formed to fix the upper side and the lower side of the circuit board, the circuit board is fixed in the mode that the circuit board is abutted against the two sides, and compared with traditional clamping fixing, the fixing mode can only block the narrow part of the edge of the circuit board; the condition that the surface of the circuit