The invention discloses a vegetable insecticide and relates to the field of agricultural drug production. The vegetable insecticide comprises, by weight, 8-12 parts of sophora flavescens, 15-25 parts of pepper leaves, 10-25 parts of tobacco leaves, 20-35 parts of argy wormwood, 15-30 parts of oleander leaves, 15-20 parts of pericarpium citri reticulatae, 15-25 parts of radix glycyrrhizae and 5-8 parts of spreader. The vegetable insecticide is simple in process, convenient to operate, capable of realizing broad-spectrum insect killing, strong in contact killing, safe and reliable to use, nonhazardous to human and livestock, free of residue, free of environmental pollution and reliable in efficacy, Chinese medicinal herbs resources are fully excavated and utilized, production cost is lowered greatly, insects do not produce antibodies, and continuous use can be realized.