Abstract: Countryside policies are differently characteristic in each stage, which forms t he different supply mechanism of the public product. Under the People's commune system the agricultural public product supply is relatively ensured. Along with that the government gives priority to developing the heavy industry and to esta blish the public product supply system differently between the city and countrys ide, the supply of agricultural public product gradually withers. The supply me chanism of top-down public product also causes the public product supply outsid e the system to lose touch with reality of the farmer demand. The tax reform and cancellation of agricultural tax even attack the agricultural public product su pply at the root . The key to solve the problem faced by the current agricultura l public product supply is to establish the agricultural public product supply m echanism in the public finance stereotype, which contains the system joining the innovation of agricultural public product demand expression, the supply decisi on-making , the innovation of agricultural public product movement system and s o on. It also has to lay stress on that the government should take limited compe nsating policies as remedial measure In rural area.