This paper expounded the favourable natural and economic conditions of sanjiang Plain and its nature resources,that provides an essential prerequisite for comprehensively developing and administrating Sanjiang Plain on agriculture. In this paper,the author point out that this area has vast prospects to develop and construct modernized agricurltue,but at present,also exists some problems on developing agriculture and useing land resources such as single Construction of production,much paying attention to development but underestimating admi nistration,divorce between reclaimation and construction,low capacity to fight natural calamities,arising deteriorated sign of ecological environment,etc.Finally, the author provided several views on developing agriculture in Sanjiang Plain: (1) determining developing direction and aim;(2) strengthening comprehensive study of agricultural natural resources;(3) determining relative agricultural production construction;(4) paying attention to relationship between reclaimation and raising unit yield;(5) devoting maior efforts to make a good basic construction of agricultural field;(6) building up leading organization and make relative lows for development and administration.