A scroll compressor comprising: a fixed scroll having a fixed-side plate and a fixed-side lap extending from a front face of the fixed-side plate; and a movable scroll having a movable-side plate and a movable-side lap extending from a front face of the movable-side plate; the fixed-side lap and the movable-side lap being coupled in a state where the front face of the fixed-side plate and the front face of the movable-side plate face each other, and forming a first compression chamber circumscribed by an outer peripheral face of the movable-side lap and an inner peripheral face of the fixed-side lap and a second compression chamber circumscribed by an inner peripheral face of the movable-side lap and an outer peripheral face of the fixed-side lap as compression chambers (Sc), a discharge port and a relief hole being respectively formed in the fixed-side plate, running from the front face through to a back face, the relief hole communicating for a predetermined amount of time with each of the first compression chamber and the second compression chamber and being shared by the first compression chamber and the second compression chamber, a recessed part being formed on the front face of the movable-side plate and allowing the second compression chamber and the discharge port to communicate, and the second compression chamber, which is in a latter stage of compression, and the discharge port communicating via a gap between a tip of the fixed-side lap and the recessed part before communicating via a side face gap between the fixed-side lap and the movable-side lap, characterized in that the recessed part includes a step and the recessed part is divided by the step into a first recessed part and a second recessed part, which has a deeper recessed depth than the first recessed part, and in the latter stage of compression of the second compression chamber, an edge part of the tip of the fixed-side lap on the outer peripheral face side of the fixed-side lap faces the second recessed part after facing the first recessed part. a fixed scroll having a fixed-side plate and a fixed-side lap extending from a front face of the fixed-side plate; and a movable scroll having a movable-side plate and a movable-side lap extending from a front face of the movable-side plate; the fixed-side lap and the movable-side lap being coupled in a state where the front face of the fixed-side plate and the front face of the movable-side plate face each other, and forming a first compression chamber circumscribed by an outer peripheral face of the movable-side lap and an inner peripheral face of the fixed-side lap and a second compression chamber circumscribed by an inner peripheral face of the movable-side lap and an outer peripheral face of the fixed-side lap as compression chambers (Sc), a discharge port and a relief hole being respectively formed in the fixed-side plate, running from the front face through to a back face, the relief hole communicating for a predetermined amount of time with each of the first compression chamber and the second compression chamber and being shared by the first compression chamber and the second compression chamber, a recessed part being formed on the front face of the movable-side plate and allowing the second compression chamber and the discharge port to communicate, and the second compression chamber, which is in a latter stage of compression, and the discharge port communicating via a gap between a tip of the fixed-side lap and the recessed part before communicating via a side face gap between the fixed-side lap and the movable-side lap, characterized in that the recessed part includes a step and the recessed part is divided by the step into a first recessed part and a second recessed part, which has a deeper recessed depth than the first recessed part, and in the latter stage of compression of the second compression chamber, an edge part of the tip of the fixed-side lap on the outer peripheral face side of the fixed-side lap faces the second recessed part after facing the first recessed part.