Abstract: Maize is the main local crops in Tongliao. Planting maize area is one third of the total, more than one million sixty seven thousand hectare. Maize industry plays an important role on the whole city and even the whole national economic development. In recent years, maize diseases and insect pests have become one of the main factors affecting yield. The maize diseases and insect pest prevention and control was no time to delay, the maize diseases and insect pest prevention and control technology about maize armyworm,maize silk black were reviewed in this paper.