In this article, the importance that using the financial fund to solve the three problems of agriculture, countryside and farmers in Fujian was briefly explained, the using performance of financial fund of supporting agriculture in Fujian was evaluated, and the factors affecting on it was analyzed. Then, the new mechanism of how to exploit the fund's utility was set up. At last, some advice about how to remain the increase of financial fund of supporting agriculture in Fujian and exploit its utility was put forward.