Abstract: High speed camera and data acquisition are important technology to research the dynamic behavior of arc, metal transfer or weld pool in welding process. A synchronized record and analysis system for high speed images and process parameters was established based on the synchronized control for high speed camera shooting and data acquisition. The system included high speed camera, synchronous signal generator, high speed data acquisition device and synchronized player software for high speed images and waveforms. The dedicated synchronous signal generator is adequate for synchronizing and trigging high speed camera from 20 to 200,000 frames/s. The PC based data acquisition device is able to take 4 welding parameters synchronously at 200 kHz. It was demonstrated by the experiments of several typical welding processes that the system was a powerful facility for recording and analyzing the dynamic process in research on welding material, welding process, process control and stability.