In response to the possibility of being a member of WTO, the supply and demand of wentan pomelo have to be studied to adjust the production structure. The result of the studies showed that : (1)The producing area and quantity of pomelo is increasing, but the demand of pomelo is not increasing in accordance with the supply, (2)Most of the respondents consider that the pomelo price should drop sharply after the Moon Festival, but just a few of them could sell out before the date, (3)Most of the respondents agree that wentan pomelo is over-produced and should be cut 43.70% in average. In order to strengthen the competitiveness, we propose that wentan pomelo should only be planted in suitable areas to decrease the production costs and improve the quality.