PURPOSE: To improve strength in a vehicle body point part supporting a front wheel, a steering handle, and the like.

CONSTITUTION: A tricycle is provided with a frame member, a hollow steering head member 38, a floor member 36, and a steering head pipe 3 supported by the steering head member 38, and the steering head member 38 consists of an upper pipe supporting part 1 having a triangular cross section and a lower pipe supporting member 2 which supports the upper pipe supporting part 1 and has an inverted U-shaped cross section. A reinforcing member 37 is fixed in the outer circumference part 6 in the lower pipe supporting part 2 along the circumference direction, while closed space parts 7, 8 having U-shaped cross sections are formed of the lower pipe supporting part 2, the reinforcing member 37, and the floor member 36.