Deepwater floating type oil gas platform utilizing underwater flexible storage device

The invention discloses a deepwater floating type oil gas platform utilizing an underwater flexible storage device. The deepwater floating type oil gas platform comprises at least one upright post and a production group block fixed on the top of the upright post, wherein the underwater flexible storage device is arranged on the upright post and comprises an annular airtight storage tank and a plurality of storage single bodies; the storage single bodies are vertically arranged and fixedly connected in the annular airtight storage tank; the annular airtight storage tank is provided with a water pipe communicated with the outside; and each storage single body is provided with a flexible soft bag and an open protecting bush, and a medium loading-unloading pipeline connected with the production group block is arranged on the flexible soft bag and is fixed on the open protecting bush. The deepwater floating type oil gas platform is safe and environmentally friendly; by storing the media by virtue of the flexible s