The invention discloses a drilling and production integration self-elevating platform. Drilling/well repairing, oil and gas processing, crude oil storage, crude oil transferring and other functions are integrated. The platform mainly comprises a platform body, a second deck, a bottom hull, pile legs, a lifting device, a cantilever beam mechanism, a drilling/well repairing facility, an oil and gas treatment facility, a transfer buffer oil tank, a transfer oil pipeline, a replacement water pipeline, an oil storage capsule and a replacement water tank. The oil and water isolation and replacement technology is adopted to achieve work of crude oil transferring of the bottom hull, circulating heating and the like; the cantilever beam mechanism and the drilling/well repairing facility are arranged on a stern of the platform body, and drilling/repairing work of multiple wells after the platform is in place at one time is achieved; the oil and gas treatment facility achieves crude oil treatment; and meanwhile, the drilling and production integration self-elevating platform has the advantages of being large in water depth application range, high in oil storage capacity, long in crude oil storage time, high in crude oil transferring efficiency and the like, and meets the development requirement of offshore marginal fault block oil and gas fields.