A polycarbonate resin composition which has a high biogenic matter content, is excellent in transparency, surface hardness and impact resistance and is useful as an industrial material having excellent moldability. The resin composition contains 100 parts by weight of a polycarbonate (component A) containing not less than 30 mol % of a recurring unit represented by the following formula (1) and 2 to 20 parts by weight of an impact resistance modifier (component B), wherein the resin composition has an aggregation structure that impact resistance modifier (component B) domains are dispersed in the matrix of the polycarbonate (component A), the average size of the impact resistance modifier domains is 5 to 200 nm, and the normalized dispersity is not more than 17%