As well know, a bicycle is a high efficiency vehicle and is suitable for aging society in the future. In the practical use, however, the bicycle is not always stable and the motion stabilization is required for a widespread application. In an electric bicycle, two strategies are taken up to stabilize the running motion of a bicycle. One is Center Of Gravity (COG) control of bicycle, and the other is a control of steering angle of handle. In the past research, there are few researches that consider an autonomous control of bicycle by using both steering and COG position control. To address this issue, this paper describes a strategy that realizes autonomous motion of bicycle with the use of steering and COG control. Numerical and experimental results are shown to verify the validity of the proposed strategy.