To prevent oil and liquid refrigerant splashed from a drive shaft from being sucked in compressing chambers of a scroll compressing part to increase performance and reliability of a compressor.

This scroll compressor comprises the scroll compressing part 20 that forms the compressing chambers 23A, 23B between both scrolls by a turning scroll 21 and a fixed scroll 22 placed inside a casing 13 and the drive shaft 25 for rotating the turning scroll 21. A suction chamber 35 communicated with the compressing chambers 20 via a suction port 35 is formed on periphery of the drive shaft 25 and a bearing support inside the casing 13. A lubrication system is provided to feed oil from an oil pan 60 below the casing 13 to as bearing part of the drive shaft 25 via an oil pump 63. And sectioning walls 71, 72, are provided for partitioning the suction chamber 36 from a space where the drive shaft 25 positions are formed above the drive shaft 25.