The invention discloses a tension leg platform for ocean oil extraction. The tension leg platform comprises stand columns, a wellhead frame, middle structures, right fixing devices and left fixing devices. A tension leg is mounted above each stand column, and a tension leg fixing foundation is fixedly mounted at the lower end of each tension leg. A spiral side plate is wound around the periphery of each tension leg, and each spiral side plate is connected with the corresponding tension leg fixing foundation. The wellhead frame is fixed to a platform, and the stand columns are mounted below the platform. Left reinforcing ribs are connected with the left sides of the stand columns, and right reinforcing ribs are connected with the right sides of the stand columns. The right reinforcing ribs are fixed to the stand columns through the right fixing devices. A deck is mounted bellow the stand columns. Production vertical pipes are mounted below the deck. Each middle structure is fixed above the corresponding production vertical pipe, and a heave plate is mounted on the periphery of each middle structure. The tension leg platform for ocean oil extraction is simple in overall structure, convenient to use and high in structural strength and stability during working, and use requirements are met.