We propose a steering control method for support in using personal mobility. The purpose of this study is to support user’s steering control in narrow environment and reduce the user’s operational burden. When we provide the steering assistance, we respect the input of them by designing the shared control. Taking it into account will lead to increase independence for users. When providing assistance, it is important to improve safety by decelerating the vehicle in consideration of obstacles and to guarantee operational efficiency. We conducted driving test using the personal mobility, in order to verify the effectiveness of our supporting method and what is causing the burden on the user.