Tomato plants are horticultural commodities that can provide benefits to farmers, beside the market demand that continues to increase, the cultivation method is easy. Tomatoes are also one type of vegetable plant that contains many vitamins and proteins that have been known by elderly people. Numerous chemical insecticides have been used in order to control pests, which damage for agriculture. While they are too expensive in the developing countries and harmful to both human and the environment. In addition, target insect pests rapidly develop biological resistance especially at higher rates of application. The chemical insecticides are still contributing to human life enormously, but they have been distributed in ecological system of organisms including human beings because of their low specific toxicity to any organism and their low specific toxicity to any organism and their slight decomposition in nature. An alternative control is needed with microbial insecticide which is using B. thuringiensis B. thuringiensis used in this study is B. thuringiensis which is already commercial.Then carried out purification as follows B. thuringiensis concentration of 5g per liter of water, 10g per liter of water, 15g per liter of water, 20g per liter of water. In treatment B. thuringiensis10g per liter of water can stop eating at 2 hours after application, and has been able to control as much as 75 percent.