The invention discloses a swing cylinder with a combined stator. The swing cylinder comprises a stator and a rotor; the stator is in bolted connection by symmetrical semicircular bases through engaging lugs arranged on the outer wall of the stator; the top outer walls of both ends of the rotor are sheathed with end face seals used for rotatably sealing the top outer walls of the rotor and the inner wall of the stator; stator supports are provided with first rectangular grooves for holding stator blades, and rotor supports are provided with second rectangular grooves for holding rotor blades; and the stator supports are connected to the inner wall of the stator, and the rotor supports are connected to the outer walls of the rotor. The cylinder block stator of the swing cylinder is of a combined structure, namely that the cylinder block stator is composed of two same parts, so the problem that blade seals and the end face seals are hard to install is solved, and the installation or removal efficiency of the swing cylinder is improved greatly; and the integrity of the blades and the end face seal structure is ensured, so that the normal operation of the swing cylinder is ensured.