To detect boron in some aquatic products from Zhejiang Province.Methods The aquatic products were collected from supermarkets and free markets in 11 cities of Zhejiang Province. The contents of boron were detected according to the second method in GB/T 21918-2008. Results In this study, 296 samples were detected. Among them, the positive rate was 66.2% (196/296). The median, P25, P75 and maximum value of boron content were 0.19, 0.025,0.47 and 26.8 mg/kg respectively. Both the content and positive rate of aquatic products in saltwater were higher than that in freshwater. In saltwater, there were no statistically significant differences in content and positive rate among crustaceans, fish and mollusks. Similarly, no statistically significant differences were found between crustaceans and fish in freshwater. There were also no statistically significant differences between shrimps and crabs in freshwater. Conclusion Freshwater aquatic products were all alive and marine aquatic products were ice fresh. The former measurement of boron content could be considered as background value, while the latter could not. Therefore, it could not be sure that the different living environment might affect the enrichment of boron in the organism. However, the determination of boron content in freshwater aquatic products will be beneficial for developing a standard of boron limitation in aquatic products.