The invention provides a rotator compressor. The rotator compressor comprises a crank shaft (1), a lower flange (2), a cylinder (3), a shell (4), and an oil pool (5) arranged at the inner bottom of the shell (4), wherein an oil blocking structure is arranged between the lower flange (2) and the bottom of the shell (4); and the oil blocking structure extends from the central axis position of the crank shaft (1) to the position near the side wall of the shell (4). According to the rotator compressor, the oil blocking structure is arranged between the lower flange and the bottom of the shell, so that the situation that the oil level in the position near the inner wall of the shell rises due to a centrifugal action generated through rotation driving of the crank shaft can be effectively prevented, the situation that the central oil level sinks too much due to the centrifugal action is effectively prevented, the central oil level is prevented from dropping too low, the purpose that the crank shaft can always suck oil from the oil pool is guaranteed, and the technical problem that lubricating, sealing and cooling functions of the compressor are decreased due to the fact that the crank shaft is short and stirs the oil is overcome.