This paper presents a USB OTG（On-The-Go）function based on Android system to realize the functions of programming

modifying and saving welding parameters of resistance welding controller. Through related circuit design

the hardware level signal transformation is completed. The software is written in JAVA language

which achieves large data communication

overcomes the interference of strong electromagnetic environment

and preserves the function of big data interface. The system has the advantages of simple structure

convenient connection and high reliability. The software interface is more friendly

the operation is simple

the human-machine interaction has been greatly improved

and user experience has been greatly improved.