As a new type of food safety risk factor， microplastics (MPs) can accumulate into the human body through the food chain， resulting in serious health risk issues. In order to explore the existence and potential risks of MPs in seafoods， we took solarized sea salt as the representative research object. Firstly， we removed organic impurities in sea salt by using 30% H2O₂ oxidant digestion as pretreatment method. Then， we confirmed the existence of MPs in sea salt by visual method， microscopic observation， microscopic fourier infrared spectroscopy， and microscopic Raman spectroscopy. Results: through visual analysis， microscopic fourier infrared spectroscopy， and microscopic Raman spectroscopy， it was found that the number of MPs in sea salt samples is approximately 2 550/kg， (750±200)/kg， and (1 500±500)/kg， with white and colorless colors as the main colors， and a small amount of red， blue， and black. Polymer types included polyester， nylon， and polypropylene. Conclusion: by comparing the advantages and limitations of common detection methods. it was determined that micro-Raman spectroscopy is more effective for both qualitative and quantitative analysis of microplastics. It will provide certain technical support for the risk warning of MPs in solarized sea salt.