The invention provides a green pesticide for preventing and controlling peanut diseases and insect pests and belongs to the technical field of pesticide. The green pesticide for preventing and controlling peanut diseases and insect pests is prepared from the following raw materials in parts by weight: 10 to 30 parts of zanthoxylum planispinum, 10 to 30 parts of wild spinach, 10 to 30 parts of daphniphyllum macropodum, 10 to 30 parts of polygonum blumei Meisn, 5 to 20 parts of Chinese prickly ash, 5 to 20 parts of euphorbia lunulata, 5 to 20 parts of catalpa leaves, 5 to 15 parts of rhizoma nardostachyos, 3 to 12 parts of vitex leaves, 3 to 12 parts of euphorbia pekinensis, 1 to 10 parts of fresh buttercup and 1 to 10 parts of gypsum. The synergistic effect is achieved through scientific formulation of the traditional Chinese herbal medicines, so that the antibacterial and insecticidal capabilities of the obtained pesticide are obviously enhanced and the antibacterial and insecticidal spectrum is wider.