a First gap 15 in a thrust direction between teeth bottoms of a fixed mirror plate 2b and teeth tips of an orbiting lap 4a, and a second gap 16 in the thrust direction between teeth bottoms of an orbiting mirror plate 4b and teeth tips of a fixed lap 2a are formed such as to gradually increase from an outer peripheral side to an inner peripheral side of a scroll compressor, the first gap 15 is made greater than the second gap 16. Contact surface pressures of the laps 2a and 4a are kept low with respect to pressure deformation, contact pressure of the teeth tips of the fixed scroll part 2 and the teeth bottoms of the orbiting scroll part 4 are equally maintained. With this loads applied to the scroll parts 2 and 4 are equally received by a thrust surface.