The invention provides a scroll compressor and an air conditioner. The scroll compressor comprises a movable scroll (21), a crankshaft (18) and a main balancing block (8); a convex part (100) is arranged on the movable scroll (21) convexly towards the direction of the main balancing block (8); a sliding part (6) is arranged on the main balancing block (8); one radial side of the sliding part (6) is connected with the main balancing block (8) through an elastic part (7) and the other radial side of the sliding part (6) is opposite to the convex part (100); furthermore, the sliding part (6) is not contacted with the convex part (100) when the rotating speed of the crankshaft (18) is lower than a preset rotating speed, and the sliding part (6) is contacted with the convex part (100) when therotating speed of the crankshaft (18) is higher than the preset speed. By the scroll compressor, the sliding part which is arranged opposite to a movable disk and rotates along with a rotating shaft can counteract part of, even all the movable disk centrifugal force, so that friction between the movable scroll and a static scroll is reduced and the problem that the movable disk centrifugal force is larger when the scroll compressor is at a high rotating speed is solved.