A scroll fluid machine comprising: a first scroll member in which a spiral first wall is provided on a first end plate; and a second scroll member in which a spiral second wall is provided on a second end plate disposed to face the first end plate and the second wall meshes with the first wall such that the second scroll member performs a revolution orbiting movement relative to the first scroll member, wherein first wall flat portions (3b2, 3b3) are provided on each of an outermost peripheral portion and an innermost peripheral portion of the first wall, the first wall flat portion (3b2, 3b3) having a height which is not changed, and second end plate flat portions (5a2, 5a3) are provided on the second end plate so as to correspond to each first wall flat portion, a first wall inclined portion (3b1) is provided over a region between the first wall flat portion provided on the outermost peripheral portion and the first wall flat portion provided on the innermost peripheral portion, the first wall inclined portion having a height which continuously decreases from an outer peripheral side toward an inner peripheral side thereof, a second end plate inclined portion (5a1) is provided over a region between the second end plate flat portion provided on the outermost peripheral portion and the second end plate flat portion provided on the innermost peripheral portion, in a tooth tip of the first wall, a chamfered portion is provided at a tooth tip corner facing a tooth bottom corner of a base of the second wall meshing with the first wall, and the chamfered portion has a shape which avoids a contact with a step portion formed at the tooth bottom corner and from which a protruding angular shape is removed characterized in that the second end plate inclined portion has a tooth bottom surface which faces a tooth tip of the first wall inclined portion and is inclined according to an inclination of the first wall inclined portion. a first scroll member in which a spiral first wall is provided on a first end plate; and a second scroll member in which a spiral second wall is provided on a second end plate disposed to face the first end plate and the second wall meshes with the first wall such that the second scroll member performs a revolution orbiting movement relative to the first scroll member, wherein first wall flat portions (3b2, 3b3) are provided on each of an outermost peripheral portion and an innermost peripheral portion of the first wall, the first wall flat portion (3b2, 3b3) having a height which is not changed, and second end plate flat portions (5a2, 5a3) are provided on the second end plate so as to correspond to each first wall flat portion, a first wall inclined portion (3b1) is provided over a region between the first wall flat portion provided on the outermost peripheral portion and the first wall flat portion provided on the innermost peripheral portion, the first wall inclined portion having a height which continuously decreases from an outer peripheral side toward an inner peripheral side thereof, a second end plate inclined portion (5a1) is provided over a region between the second end plate flat portion provided on the outermost peripheral portion and the second end plate flat portion provided on the innermost peripheral portion, a first wall inclined portion (3b1) is provided over a region between the first wall flat portion provided on the outermost peripheral portion and the first wall flat portion provided on the innermost peripheral portion, the first wall inclined portion having a height which continuously decreases from an outer peripheral side toward an inner peripheral side thereof, a second end plate inclined portion (5a1) is provided over a region between the second end plate flat portion provided on the outermost peripheral portion and the second end plate flat portion provided on the innermost peripheral portion, in a tooth tip of the first wall, a chamfered portion is provided at a tooth tip corner facing a tooth bottom corner of a base of the second wall meshing with the first wall, and the chamfered portion has a shape which avoids a contact with a step portion formed at the tooth bottom corner and from which a protruding angular shape is removed characterized in that the second end plate inclined portion has a tooth bottom surface which faces a tooth tip of the first wall inclined portion and is inclined according to an inclination of the first wall inclined portion.