The invention relates to a variable volume type scroll compressor which comprises a movable scroll plate and movable scroll teeth formed on the movable scroll plate. The variable volume type scroll compressor further comprises a static scroll plate and static scroll teeth formed on the static scroll plate; the movable scroll teeth are engaged with the static scroll teeth mutually, and then the movable scroll teeth, the static scroll teeth, the movable scroll plate and the static scroll plate form a sealed compressed air cavity; an exhaust outlet is formed in the static scroll plate; and the movable scroll plate is assembled at the end of a crankshaft. The variable volume type scroll compressor further comprises a driving mechanism for driving the static scroll plate to move up and down inthe axial direction of the crankshaft, a movable scroll elastic component for pushing the movable scroll teeth and allowing the tops of the movable scroll teeth to tightly abut against the static scroll plate, and a static scroll elastic component for pushing the static scroll teeth and allowing the tops of the static scroll teeth to tightly abut against the movable scroll plate. According to thevariable volume type scroll compressor, the volume of the scroll compressor is directly changed through mechanism movement, and the mechanism neither includes high-cost components, nor introduces additional energy consumption factors. The variable volume type scroll compressor is lower in cost and has the higher energy saving advantage.