The invention discloses a novel bridge body, wherein comprises a running component and a watering mechanism, wherein the watering mechanism is fixedly arranged at the right side of a running bridge body; the running component comprises the running bridge body, a water inlet cavity with an upward opening is formed in the bridge body at each of the left and right sides of the running bridge body; awell cover is arranged in an inlet position of the water inlet cavity; a plurality of water inlet groove openings penetrating through the well cover are formed in the well cover; a water storage cavity is arranged inside the running bridge body; a downwards inclined rainwater slide opening is formed between the water storage cavity and the water inlet cavity in a communicated way; the bottom of the inner left wall of the water storage cavity is provided with a flow leakage passage penetrating through the running bridge body; a first slide groove is formed in the inner top wall of the leakage flow passage; a first rotating cavity is formed in a position, positioned at the lower side of the water storage cavity, inside the running bridge body; a first motor is fixedly arranged in the right wall in the first rotating cavity; an output shaft arranged at the left side of the first motor is rotationally matched with the left wall of the first rotating cavity; a second slide groove is formedin the inner bottom wall of the first rotating cavity.