Developing and etching device capable of preventing circuit board from arching

The utility model discloses a developing and etching device capable of preventing a circuit board from arching, which comprises a developing assembly, an etching assembly, a first circuit board conveying device, a second circuit board conveying device, a circulating pump, a filtering tank and a matching regulator, the developing assembly and the etching assembly are arranged in parallel, and the outer sides of the developing assembly and the etching assembly are communicated with the circulating pump and the filtering tank; the first circuit board conveying device is arranged in the developing assembly in a penetrating mode, the second circuit board conveying device is arranged in the etching assembly, the first circuit board conveying device and the second circuit board conveying device are spliced on the same straight line, and the matching adjuster is arranged on the outer side of the developing assembly. The speed of the first circuit board conveying device can be controlled by matching with the design of