Abstract: In order to solve the problem of the amount of application of organic fertilizer in eggplant reasonable, based on the study of field experiment conducted in suburb of Hangzhou, Zhejiang in the year 2012, through the application of different levels of organic fertilizer on the yield and quality of eggplant, the results showed the best curve equations between the rate of organic fertilizer (ranged from 0 to 4.5 t/hm2) and Solanun melongena yield, solidity, protein and rutin were the cubic (P=0.002<0.01), linear (P=0.048<0.05), cubic (P=0.007<0.01) and quadratic (P=0.002<0.01) curve equation respectively. For example, the yield was the best in the rate 2.0 t/hm2 of organic fertilizer, and then declined; the solidity significantly decreased as organic fertilizer consumption increased, the protein content and rutin content were best in the application rate of 3.5 t/hm2 and 3.0 t/hm2 respectively, and then dropped significantly. Accordingly, while similar soil property regions grow Solanun melongena, right amount of organic fertilizers (2.0-3.0 t/hm2) can improve the yield and quality of Solanun melongena.