The utility model belongs to the technical field of waterproof rolls, and particularly relates to an adjustable waterproof roll winding device which comprises a base, a back plate is arranged on one side of the upper side face of the base, a first motor is arranged on the side, away from the base, of the back plate, the output end of the first motor penetrates through the back plate and is provided with a winding roller, and the outer side of the winding roller is sleeved with a waterproof roll. A second motor is arranged on one side of the first motor, the output end of the second motor penetrates through the back plate and is provided with a shaft rod, a connecting ring is arranged on the outer side of the shaft rod, limiting rods are arranged on the side, close to the winding roller, of the connecting ring, the limiting rods are arranged at the two ends of the waterproof roll, and the limiting rods comprise the first limiting rod, an arc rod and the second limiting rod. Arc rods are arranged at the ends, away from the connecting rings, of the first limiting rods. And the position of the limiting rod is conveniently rotated and adjusted, the waterproof roll is limited during winding and prevented from deviating, the limitation on the waterproof roll is relieved after winding is completed, and the waterproof roll can be conveniently and rapidly detached from the winding roller.