Taking the special shaped composite steel plate shear wall as an example,the key points and control difficulties in the steel plate wall production are expound. For the characteristics of steel plate wall like relatively thin plate,large width,large wave deformation,bulge deformation,side bend and twist after welding,some necessary measures such as a reasonable technological process,effective welding technology,deformation control and correction are took to control the size of component effectively and meet the manufacturing quality accuracy requirements of component.