The invention discloses a solar hot airflow and cold air composite power generation system suitable for a massif. The power generation system comprises a solar hot airflow power generation device and a cold air power generation device. The solar hot airflow power generation device comprises hot air collecting sheds, turbine power generator sets I and solar chimneys arranged on the top of the massif. The hot air collecting sheds are arranged at the upper portion of a slope and connected with the solar chimneys. The turbine power generator sets I are arranged at the junctions of the solar chimneys and the hot air collecting sheds. The cold air power generation device comprises air collecting sheds, turbine power generator sets II and a short exhaust chimney arranged at the bottom of the massif. The air collecting sheds are arranged at the lower portion of the slope. The turbine power generator sets II are arranged at the junctions of the short exhaust chimney and the air collecting sheds. The part, located between the air collecting sheds and the hot air collecting sheds, of the slope is exposed outside. On the basis that the solar radiation is used for heating gas, and the chimneys generate floating force for generating power, the valley wind effect produced by the massif terrain is effectively utilized, and efficient and continuous power generation is achieved; and the solar hot airflow and cold air composite power generation system has the beneficial effects of being low in power generation cost, wide in application range and the like.