Safety convenient bicycle

The utility model relates to a bicycle. A transmission mechanism of the bicycle is installed on the left side of a bicycle body, i.e. a large chain wheel of the transmission mechanism is installed on the left end of a middle shaft. A small flywheel of the transmission mechanism is correspondingly installed on the left end of a rear wheel shaft of the bicycle body. The small flywheel and a wheel hub on the left end of a rear wheel are connected by a left-handed thread The large chain wheel is connected with the small flywheel on the wheel hub on the left end of the rear wheel shaft by a chain. A landing support of the bicycle body is installed on the right side of the bicycle body. The landing support is composed of a support leg and a connecting plate. The upper end of the support leg and the lower end of the connecting plate are hinged. The upper part of the connecting plate is provided with a through hole, and the connecting plate is sheathed on the right end of the rear wheel shaft. An edge wall of the upper part of the connecting plate is provided with a leftward arc stop claw, and the leftward arc stop claw is clamped on the rear end of a sleep fork on the right side of the lower side of the bicycle body.