A vehicle with carriage anti-tilting structure, which comprises a frame and, a carriage of a cylindrical shape, with its central axis in parallel along the length of the vehicle and is connected with the frame in a free rotation state. The rotating axis of the carriage is the central axis of the carriage, and the gravity center of the carriage is lower than the rotating axis. An electrical locking mechanism for stopping the rotation of carriage is arranged between the carriage and frame, and is connected with a vehicle tilting angle detector which installed on the frame. The locking mechanism acts as an actuator of the vehicle tilting angle detector. In the event of tilting of the vehicle, the vehicle tilting angle detector detects the tilting condition, and then output signal to the electrical locking mechanism, which releases the locking of the carriage and enables it to stay leveled.