Abstract: A soil pot experiment was conducted at suburb of Hangzhou， Zhejiang， China in 2012 to determine the relationship between soil available phosphorus （Olsen\|P） contents and eggplant fruit qualities by 10 types of curve regression equation. The results showed that the solidity of eggplant fruits significantly increased as increasing Olsen\|P contents. The protein contents in the eggplant fruits significantly reduced as increasing Olsen\|P contents （55-202 mg·kg-1）. Rutin contents in the eggplant fruit significantly reduced as increasing Olsen\|P contents （77-202 mg·kg-1）. The maximum contents of protein and rutin were obtained from Olsen\|P at 55 and 77 mg·kg-1， respectively. It is not necessary to apply phosphate fertilizer to the soil when Olsen\|P exceeds 77 mg·kg-1.

Key words: soil available phosphorus, eggplant, solidity, protein, rutin