Peanut web blotch disease shows two symptoms depending on the climatic conditions. One is the reticulation type, in the case of relatively suitable temperature and humidity, the spot development is very fast. Reticulate disease onset of the early stage, in the front of the leaf blade to produce white small pink spots, gradually white stellate radiation, with the expansion of the spot, the middle becomes brown, dark brown, the edge of the spot is not clear. The other is the stain type, the spot is nearly round, dark brown, the edge of the spot is clearer, mainly because in the process of the development of net blotch disease, encountered unsuitable climatic conditions. In the rainy season, it mostly produces larger, suborbicular black-brown plaques with a diameter of 1 to 1.5 millimeters, and the lesions on the abaxial surface of the leaves are inconspicuous and light brown. Later on, small chestnut brown spots appear on the spots, that is, the pathogen conidiophores, the old spots become dry and easy to rupture. Net spot disease and leaf spot disease mixed occurrence case, can cause early leaf shedding.