As a molecular technology suitable for various industries, LC-MS has the advantages of short development time, high sensitivity, simple operation and broad development prospects. As a molecular technology suitable for various industries, LC-MS has the advantages of short development time, high sensitivity, simple operation and broad development prospects. In recent years, it has been widely used in related industries, which has injected new impetus into the transformation and development of various industries. This technology is still a new thing in China, and the overall development time is short. It needs to overcome layers of obstacles to play its due role in related industries. The advantages of LC-MS technology are simple operation, high sensitivity and less reagents required for detection. Compared with traditional detection technology, LC-MS technology can help detection institutions to save detection costs. LC-MS can detect food samples in Qualcomm, covering almost all food samples at home and abroad. It is necessary to further promote the research work of this technology and inject new impetus into the popularization, application and transformation of this technology.