A scroll compressor including: a housing; a motor provided in the housing; a rotary shaft configured to be rotated by the motor; an orbiting scroll configured to orbit in conjunction with the rotary shaft; and a fixed scroll configured to define compression chambers together with the orbiting scroll, in which the housing includes: a center housing penetrated by the rotary shaft; a front housing configured to define a motor accommodation space that accommodates the motor; and a rear housing configured to define a discharge chamber for accommodating a refrigerant discharged from the compression chambers, and an introduction chamber for accommodating a middle-pressure refrigerant introduced from the outside of the housing, in which the fixed scroll has a plurality of injection ports that guides the refrigerant in the introduction chamber to the compression chambers.