The invention discloses a deep-draught semi-submersible production platform with an oil storage function. The deep-draught semi-submersible production platform is characterized by comprising a rectangular frame body which is formed by connection of four bypass pipes and four nodes, wherein a stand column is arranged at the top of each of the four nodes; the tops of the four stand columns together support an upper group block; an empty cabin, a ballast water cabin, a crude oil cabin, an anchor chain cabin and a passage for transporting personnel and cargo are arranged in the four stand columns; a ballast water cabin and a passage for pipeline arrangement, maintenance and inspection are arranged in the four bypass pipes; the upper group block adopts a plane box structure; and the upper group block is a carrier for the offshore oil and gas treatment equipment and a living building.