Abstract: A spring driven shaver capable of being significantly simplified in structure to a degree sufficient to carry out down-sizing of the shaver and be portable. The shaver includes a shaver body, in which a spiral spring, a spring wind-up wheel, a gear wheel coaxial with the spring wind-up wheel and a plurality of speed-up gears engaged with each other in order are arranged. One of the speed-up gears is engaged with the gear wheel and a gear shaft on which another one of the speed-up gears is mounted is arranged so as to upward extend from the shaver body and provided at an upper end thereof with a rotary member having blades mounted thereon. The spring wind-up wheel is so arranged that a part thereof is constantly projected from a side of the shaver body.