Rear one-wheel driven motortricycle

The utility model relates to a motor tricycle driven by a single rear wheel. The motor tricycle changes the upward bending position of the direction shaft of a seat type motorcycle into a forward stretching position, the shaft center of the direction shaft is perpendicular to the ground to form movable connection with the chassis of a carriage through a direction shaft position pin, so that the direction shaft can rotate within the range of 90 DEG in a plane parallel to the ground, and the running speed is controlled by a gasoline throttle. When a direction handhold is pushed to the right or to the left by hands, the direction handhold drives the carriage and two front wheels to make motion to control the running direction. The utility model provides families, women, older adults and individual peddlers with a motor tricycle with the advantages of simply driving, convenience and safety.