Abstract: We aim to respond efficiently to crime by using arduino and smartphone applications in response to increasingly increasing number of house-breaking crimes. With the rapidly aging population and single-family surge, crime prevention and disaster prevention for the certain population are becoming weaker. Using the home security system to improve crime prevention crime every year, helping prevent crime is expected to help prevent crime and develop research and development. Home security system using arduino connected with smartphone application and various sensors have been system designed and implemented. It receives the signal of the sensor installed in the house and connects it with the application of the smartphone. To use the application, you can download the application from the user’s smartphone, launch the application and run the operation outside the home, not only inside the house by linking the executed application. Among the sensors installed in the house, the movement detection sensor is used to enhance the security and the gas leakage sensor and the flame detection sensor can be used to easily detect the risk of fire and to prevent the fire early. Security is further enhanced by the ability to remotely control the front door with smartphone.