The invention discloses a rotary compressor and a refrigerating circulating system with the same. The rotary compressor comprises a shell, a compression device and a motor, wherein the compression device comprises a first cylinder and a second cylinder which are provided with a first compression cavity and a second compression cavity respectively, a middle partition plate, a first piston, a second piston, a first slip sheet, a second slip sheet, a crankshaft for driving the first piston and the second piston to rotate, a main bearing, an auxiliary bearing, a first exhaust silencer arranged above the main bearing, a second exhaust silencer arranged below the auxiliary bearing, and an exhaust assembly for exhausting high-pressure refrigerants in the first exhaust silencer and the second exhaust silencer. According to the rotary compressor, due to the exhaust assembly, the exhaust efficiency is improved, the volumetric efficiency is improved and overcompression is prevented; in addition, the difference of oil supply amounts of two compression cavities is minimized, the compression efficiency reduction caused by leakage of the refrigerants is prevented and the reliability of sliding parts is improved.