Pickling tank

The utility model discloses a pickling tank, which comprises a pickling tank main body, a pickling tank cover, a pickling tank cover and a pickling tank cover, and is characterized in that the pickling tank main body is provided with an upward-opening accommodating cavity; an opening of the draining basket faces upwards, the draining basket is arranged in the containing cavity in a matched mode, the part, located below the draining basket, of the containing cavity is a liquid storage cavity, filter holes are formed in the basket bottom of the draining basket, the interior of the draining basket is communicated with the liquid storage cavity through the filter holes, the filter holes can prevent filter residues from passing through, and a substrate can be placed in the draining basket; the spraying gun is arranged on the pickling tank main body, a nozzle of the spraying gun faces the substrate, and a water outlet communicated with the liquid storage cavity is formed in the tank wall of the pickling tank main b