In order to effectively solve the problem of rice drought and yield reduction caused by uneven spatial and temporal distribution of rainfall，and formulate drought-resistant policies for government functional departments to improve water resources utilization rate，the project set up mobile rain-proof greenhouses，used barrel-measuring area(weighing transpiration meter)and field comparative experiments，and set up four growth stages of late rice，namely，tillering stage，jointing booting stage，heading flowering stage and milk ripening stage，respectively.Normal irrigation)，light drought，moderate drought，heavy drought and extreme drought，and according to the actual situation of Jiangxi Province，set two or three growth periods of continuous drought.It is concluded that the tillering period is drought，the number of effective panicles of rice is reduced，the number of grains per panicle is reduced，the number of grains per panicle is reduced，the heading and flowering period is drought，the 1 000-grain weight and seed setting rate of rice are drought.The continuous drought of more than two growth periods has a greater impact on yield than that of a single period.The higher the degree of drought in the same growth period，the lower the yield.