The deterioration of ecological environment became more serious in recent years in China,and the ecological problems in the west of China became more and more prominent.In order to improve ecologicl environment,the compensatory policy of the grain for green has been established.For there have been the regulations of return the grain plots to forestry to be the legal guarantee,but the defect of this system made the interest of the peasants not sufficlently achieved.Carrying out this policy has faced kinds of hinders.The main causes of it is that the compensatory time limit is not reasonable and the compensatory standard is not scientific,without a perfect system.According to the status of the west of China,the regulations of return the grain plots to forestry are analyzed in this paper.and a better compensatory system of ecological forest is put forward,including compensating principle,compensating properties,compensating scope,compensating standard,compensateing procedure and compensating way.