The utility model discloses a scroll compressor. The scroll compressor (1) comprises a flange storage part (54) of a flange part (33) and a through hole (53), wherein the flange storage part (54) is formed by a sagging side end face of a compressing mechanism (10) and is used for storing a movable vortex (30), the through hole (53) extends from a bottom face of the flange storage part (54), and a drive shaft (80) is inserted into and is supported by the through hole (53). A sealing ring groove (57) is arranged on a side end face of the compressing mechanism (10) on a fixed component (50), and the sealing ring groove (57) forms a ring shape on an outer side of an opening of the flange storage part (54) and is used to support a sealing ring (58). An annular slot (59) is formed on an outer side of the through hole (53) and on the bottom face of the flange storage part (54). An outer diameter d1 of the annular slot (59) and a diameter d2 of an opening of the flange storage part (54) on one side of the compressing mechanism (10) meet a relationship that d1 is larger than or equal to d2.