In order to solve the problem of compromise between manufacturability and product performance in PCB design process, the PCB packaging of surface mount components was designed according to IPC-7351B standard. According to the requirements of IPC-7351B standard, manufacturability and reliability, by calculating the size and pin parameters of SMD pad for standard packaging, and setting the resistance welding parameters of SMD pad, PCB footprint of surface mount component is designed. The practice results show that this method can improve the solderability and reliability of products.