The invention discloses a system for multi-signal collecting of welding process and movement control of a welding platform. The system is characterized in that a welding electric signal sensing device is used for collecting welding current and voltage, converting a collected electric signal into a voltage signal, and transmitting the voltage signal to a PC (personal computer); an electric arc sound collecting system is used for converting a collected sound signal into a voltage signal, and transmitting the voltage signal to the PC; a high-speed camera device is used for transmitting a shooting droplet transfer image signal to the PC through an industrial Ethernet bus; the serial communication is performed between a servo motor movement device and the PC through an RS-232 bus; the PC is used for receiving the data sent by the welding electric signal sensing device, the electric arc sound collecting device and the high-speed camera device, and storing the data into a local; the PC is used for controlling the movement of the servo motor movement device according to an instruction inputted by a user. The system has the advantages that the PC is used for remotely controlling the welding platform; multiple signals can be collected, so a good analysis platform is provided for the optimizing of welding technology and the studying of welding electric arc mechanism.