A scroll compressor easily assembled, requiring no thrust bearing, formed in an inboard bearing structure pivotally supporting a compression part at its opposite ends, and having simply formed scrolls. The scroll compressor comprises the compression part having the swing scroll (31) installed in a closed container (1), forming spiral teeth roughly symmetrically on both surfaces of a swing base plate, and having a spindle (7) fixedly passed through its center part and the pair of fixed scrolls (33) and (34) disposed on both surfaces of the swing scroll through the spindle and having spiral teeth forming compression chambers correspondingly to the spiral teeth and a motor driving the spindle.; The spindle comprises cutout parts (71) formed at through parts for the swing scroll and the fixed scrolls, a slider (72) in which eccentric holes (72B) with flat surfaces corresponding to the cutout parts are formed, fitted to the cutout parts of the spindle, and formed slidable in a direction crossingly perpendicular to the longitudinal direction of the spindle, and balancers for balancing disposed on both sides of the compression part and performing eccentric rotating motion.