In order to reduce the usage and the direct emission of phosphine into the atmosphere during insect control process in tobacco storage, we investigated the effect of different cleaning and isolate measures on insect population, and conducted an experiment on low-dose aluminium phosphide fumigation at different temperatures and the chemical absorption experiment of phosphine. The results showed that the insect population in isolated warehouses was lower than that in the ordinary warehouses, and at high temperature in summer, the conventional aluminium phosphide unit dosage 6.0 g/m3 could be reduced to about 4.0g/m3; while the saturated calcium oxychloride solution proved moderately effective in reducing phosphine, although not completely. We suggest that comprehensive consideration is necessary in reducing the usage and the direct release of phosphine into the atmosphere, with the measures of warehouse sanitation, fumigation with low fumigant unit dosage and phosphine decontamination after fumigation.