The invention relates to the technical field of cold-rolled steel production, in particular to an efficient cold-rolled steel pickling device for shear blade production. The device comprises a box body, an acid liquor tank is formed in the box body, a liquor outlet is formed in the middle of the inner bottom wall of the acid liquor tank, a steel inlet is formed in the middle of the left side of the box body, a steel outlet is formed in the position, corresponding to the steel inlet, of the right side of the box body, an observation opening is formed in the middle of the upper end of the front face of the box body, a control box is fixed to the position, located below the observation opening, of the front face of the box body, a transmission assembly is arranged in the box body, the transmission assembly comprises a first transmission roller set, a second transmission roller set and a guide roller set, a cleaning assembly is arranged in the box body, and the cleaning assembly comprises two fixing blocks. By arranging a filter assembly, acid liquor can be filtered, the purity of the acid liquor can be improved, meanwhile, a filter plate can be replaced without affecting the pickling process, and the filter efficiency of the filter plate to the acid liquor can be improved.