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With the development of laser mass spectrometry systems, it is demanded that the running state is controled real-time and operated. The laser control system has become an urgent need for the laser system in order to study the relationship between the laser wavelength and mass spectrometry signal, automatic contrasted laser wavelength with mass spectrometry signal. The laser control system was developed with database technology, serial communications technology, Ethernet communication technology. The laser control system has completed the data acquisition and automatic control of local and remote for the running status of laser system. The laser system can synchronize with MS system by trigger outside to meet the needs of laser mass spectrometry system for a wide range of wavelengths, small-scale and fine scan.