Based on local tobacco culture conditions, A system approach with single chemical, single spraying time, single concentration, and single field operation was used to control tobacco diseases and insects successfully in Jiahe. The control rate was 99.17% for mosaic virus, 99.34% for prodenia litura (fabricius) and Heliothis assulta Guenee, and tobacco survival rate was 98.5%.The ratio of input and output was 1:6. It was observed that outcome increased by 2906.85 yuan/hm2, and net income increased by 0.1 million yuans RMB. The economical and social effects of these results are significant.