Conventional cooking methods like cooking on wood stoves and kerosene stokes is a tedious process. These methods not only effect environment, but also damages peoples' health. So, domestic gas cylinders came into the use. With the use of domestic gas cylinders cooking became easy and cooking time is also reduced. But there are also ill effects of using these cylinders. Leakage of domestic gas is not only fatal to human and animal life but also causes huge property loss. Therefore, detection and necessary measures are to be taken to prevent fatal accidents. In this paper, we are going to discuss about detection and prevention of domestic gas leakage using MSP430 micro controller.