All-dry skeleton type tight-buffered optical fiber cable, the optical fiber ribbon in the skeleton optical cable is replaced with a tight-sleeved loose fiber, which reduces the wrapping of the optical fiber with the resin, which saves the cost and facilitates the. All-dry skeleton type tight-buffered optical fiber cable, the optical fiber ribbon in the skeleton optical cable is replaced with a tight-sleeved loose fiber, which reduces the wrapping of the optical fiber with the resin, which saves the cost and facilitates the. The invention discloses a skeleton type optical cable and a preparation method thereof. The skeleton type optical cable comprises a central skeleton and a peripheral skeleton; the peripheral framework is embedded with optical fibers in a closed pre-wrapping mode and continuously wrapped on the. In the FTTH access mode, the feeder section and distribution section of the access network currently use three types of optical cables: loose cable, tight cable, and skeleton ribbon cable. Based on the characteristics of several typical optical cables, it is decided to use a full-dry skeleton. FTTH distribution optical cable refers to the optical cable from the optical distribution point to the network access point. The optical cable usually needs to be frequently disconnected and branched.