This scroll compressor includes a fixed scroll and an orbiting scroll inside an airtight container. The fixed scroll has a fixed base plate and a fixed spiral body provided on the fixed base plate. The orbiting scroll has an orbiting base plate and an orbiting spiral body provided on the orbiting base plate, and is arranged so that a spiral tooth of the orbiting spiral body engages with a spiral tooth of the fixed spiral body to form a compression chamber. The orbiting spiral body is disposed in a position corresponding to an opening part of a port, which is disposed in the fixed base plate and communicates with the compression chamber. The orbiting spiral body has a thick part thicker than other portions thereof, in which the outward surface of the spiral tooth smoothly protrudes outward in a radial direction of the spiral. The fixed spiral body and the orbiting spiral body each have, at a position facing the thick part, a deformation part in which both an inward surface side and an outward surface side of the spiral tooth are displaced in the same direction in the radial direction of the spiral so as to be deformed in comparison with preceding and trailing parts in the winding direction.