The electric wheelchair is equipped with a camera and other sensors to automatically follow white lines. Elderly people can hold onto this electric wheelchair to assist them in walking. The addition of safety features for safe handling of automated machinery has resulted in a high rate of automation and safety. Walking with the walking assist device reduces the maximum floor reaction force per stride and its standard deviation. Furthermore, a simulated experiment was devised based on data from an actual stumbling phenomenon, and it was confirmed that this device reduces the disturbance of walking motion caused by stumbling.