Abstract: Potential ecological risks of 6 heavy metals in vegetable soil were evaluated by using Hakanson’s potential ecological risk evaluation method, and 4 different sets of evaluation standards. The results showed that there didn’t exit significant difference among the evaluation standards in single-element potential ecological risk coefficient of As, Cd, Pb, Cu and Zn. The Eri value of As, Cd, Pb, Cu and Zn were all less than 40, posing little（Ⅰgrade） ecological hazard, but it was significant in the case of Hg, the Eri value of Hg was19.59 to 114.4, posing little(Ⅰ grade) to very strong (Ⅳ grade) ecological hazard. Sequencing of Eri value revealed that Hg pollution was on top of the list and followed by Cd pollution in the two sampling sites. In terms of potential ecological risk index, RI value of both sampling sites were less than 150, regardless of evaluation standards, suggesting that integrated potential ecological harzard of 6 heavy metals contents of As, Hg, Cd, Pb, Cu and Zn were slight. The potential ecological risk of heavy metals in Sampling Site No.1 was higher than in Sampling Site No. 2. Therefore, the latter should enjoy the priority of being chosen as vegetable production base.