provided is a scroll compressor capable of ensuring reliability of a release valve device . the scroll compressor is provided with : an orbiting scroll having an orbiting scroll wrap ; a fixed roll having a fixed scroll wrap intermeshing with the orbiting scroll wrap ; a release hole formed in the fixed scroll ; a housing hole communicating with the release hole and having larger diameter than that of the release hole ; a valve seat member which is housed in the housing hole and has a valve seat surface ; a valve plate contacting with or separating from the valve seat surface by a pressure difference ; a spring for pressing the valve plate against the valve seat surface ; a stopper which is equipped with the spring and secures the valve seat member ; and a retainer for securing the stopper .