Abstract: In order to accurately grasp the actual use of main crop fertilizer in Baoshan City and further promote the fertilizer reduction action, the fertilization status of 2 845 farmers in Baoshan City was investigated in 2021. The results showed that there were great differences in the number, proportion, frequency and mode of fertilization among different crop farmers in Baoshan City.Heavy application of large amount of element fertilizer, light application or no application of medium and trace element fertilizer was prominent, and the amount of organic fertilizer was insufficient in most crops. Combining with the database of soil testing and formula fertilization project, this study proposed reasonable fertilization technology and fertilization method, aiming at providing technical support for improving the coverage rate of soil testing and formula fertilization technology, preventing and controlling agricultural non-point source pollution, and realizing sustainable agricultural development.