The present invention provides a scroll fluid machine. In a scroll fluid machine having a plurality of crankshafts connected to the outer periphery side of an orbiting wrap, it is possible to reduce the size of an orbiting scroll and improve the maintainability. The scroll fluid machine includes a fixed scroll provided with a spiral-shaped fixed wrap on a plate surface of a fixed side base plate portion, and an orbiting scroll main body provided and fixed on a plate surface of the wrap-side substrate portion. A scroll-shaped orbiting wrap meshed with the spiral wrap body and provided with a plurality of notched portions extending inward in the radial direction from the end surface of the outer peripheral portion of the wrap-around side base plate portion; the orbiting scroll base fixes theorbiting scroll body through a bolt which is inserted in the outer periphery, and a plurality of bearing portions that enter the inside of the cutout portion in a state, wherein the orbiting scroll body is fixed is provided corresponding to the cutout portion; and a plurality of crankshafts are provided, wherein an eccentric shaft portion that is inserted toward the bearing portion is arranged ineach crankshaft.