Early blight is an important disease of eggplant. The cultivation site has a high incidence of disease, especially in the seedling stage. Can invade leaves, stems and fruits. From the seedling stage can begin to harm, the adult stage can also be disease. The main damage to the leaves, resulting in early defoliation, the impact of fruit production should be prevented and treated as soon as possible. Seedlings at the seedling stage should be treated as early as possible. In the early stage of disease, 50% amethlyone-copper 500x solution, 64% caofforin 400 to 500x solution, 50% iprodione WP 0.5x solution, and 50% chloroxychloro copper can be used. Wettable powder 500 times, 70% mancozeb WP 500 times, 70% EDP Zn wettable powder 400 times, 75% chlorothalonil wettable powder 500 times, 50% carbendazim Wettable powder 500 times, 50% of Bifidobacterium WP can be 600 to 800 times, etc., 7 to 10 days once, and even prevent 2 to 3 times, pay attention to the use of drugs alternately.