Oil cylinder capable of adjusting stroke of piston rod

The utility model discloses an oil cylinder capable of adjusting the stroke of a piston rod. The oil cylinder comprises an oil cylinder body (1) and a piston (2), wherein the piston (2) is arranged in the oil cylinder body (1); and the piston rod (3) is arranged in the piston (2). The oil cylinder is characterized in that the oil cylinder body (1) is a two-way oil cylinder body; and a stroke limiting sleeve (4) is arranged at one end of the piston rod (3), so the stroke of the piston rod can be controlled according to the position of the stroke limiting sleeve on the piston rod, and requirements of different molds are met.