The present invention relates to a leg-pressurizing device attachable to and detachable from a riding apparatus of the present invention, when a user is pedaling while sitting on a saddle, a pair of calf pressing rollers constantly pressurize lower surfaces of user's calves upward and downward and forward and backward while the user's calves move upward and downward and forward and backward, and a pair of tiptoe pressing rollers constantly pressurize user's tiptoes while the user's tiptoes are rotating, so that the user's calves and tiptoes are pressurized regularly by the rotational movement of the rollers, thereby enabling smooth blood circulation of the leg and preventing various adult diseases.