By supervision of fertilizers for three years in Chongqing,It showed that the average eligibility rate of fertilizer was 69.3% in the three years,it was 58.8% in 2006.The average eligibility rate of superphosphorate was 63.1% in the three years,it was 36.4% in 2006.The average eligibility rate for the compound fertilizer of N P2O5 K2O was 77.5% in the three years,the average eligibility rate of the low concentration ones was 64.0%,the average eligibility rate of the middle concentration ones was 80.0%,the average eligibility rate of the high concentration ones was 98.2%.The average eligibility rate of the other fertilizers was 28.6% in the three years,it was 23.1% in 2006.In order to improve the quality of fertilizers,we put forward 4 countermeasures.