Pickling tank with acid mist sealing function

The invention relates to a pickling tank with acid mist sealing. The technical problem that an existing pickling tank is poor in sealing effect is solved. Comprising a pickling tank body used for containing pickling liquid, the upper end of the pickling tank body is open, a sealing cover body capable of sealing the open end is movably arranged at the upper end of the pickling tank body, and a water sealing structure is arranged between the circumferential outer side of the lower end of the sealing cover body and the open end of the pickling tank body; the stand column is provided with a cover body swing driving mechanism which can make the sealing cover body swing in the circumferential direction so as to cover the open end of the pickling tank body or be separated from the open end of the pickling tank body, and a deformation type sealing structure which can deform when the sealing cover body covers the open end of the pickling tank body is further arranged between the sealing cover body and the open end of