The invention relates to a rolling forming closing-in jig, and belongs to the field of jigs. According to the rolling forming closing-in jig for a lathe, the lathe comprises a lathe spindle, a lathe saddle and a lathe tailstock. The rolling forming closing-in jig comprises a grasp floral claw, a roller and a stop head. The grasp floral claw is installed on the lathe spindle. The roller is installed on the lathe saddle. The stop head is installed on the lathe tailstock. With the rolling forming closing-in jig, the problems that an end port of a spring needle or a spring bulges or gets bent or deforms or the like when being closed in are solved fundamentally, it is realized that a coating is not prone to damage, the grasping force after closing-in is carried out can be well increased, and interface dimensions are easy to control during assembly. Furthermore, the rolling forming closing-in jig has the characteristics that the assembly technology is simple, a metal coating is not prone todamage, and the mechanical and electrical properties of a connector are stable.