In order to investigate the low valley basin in Longling County tobacco suitable mulching transplanting methods, through the analysis of meteorological factors in Longling County low valley basin, with methods of field test and control film. honghua dajinyuan as test object, studied the influence of different film mulching transplanting on winter spring tobacco’s growth and yield and quality. Test results show that transplanting methods under film can avoid 1-2 month low effect on tobacco in the low valley basin of Longling County and promote the tobacco sooner, reducing the incidence of tobacco virus diseases, bacterial wilt in field,climate spot rate;increasing the yield and quality of flue-cured tobacco, which raises the proportion of 5.43-6.56 percentage points, fold increases 3.36-8.20yuan/kg, yield increases 207-645 kg/hm2, output 13307.7-33193.3 yuan/hm2;index of main chemical composition influence is small.