Full-dry optical fiber ribbon optical cable

The invention provides a full-dry optical fiber ribbon optical cable, which comprises an optical unit, a first buffer layer, a first waterproof layer, a loose tube, a second waterproof layer, an armor layer and a protective layer, and is characterized in that the optical unit comprises a plurality of optical fiber ribbons; the first buffer layer, the first waterproof layer, the loose tube, the second waterproof layer, the armor layer and the protective layer are sequentially sleeved on the plurality of optical fiber ribbons layer by layer; the first buffer layer is a high-elasticity polymer material layer, the shore hardness of the first buffer layer is 45-85 HA, the tensile strength of the first buffer layer is larger than or equal to 10 MPA, the elongation at break of the first buffer layer is 200-600%, the compression permanent deformation rate of the first buffer layer is smaller than or equal to 30%, and the first buffer layer comprises a plurality of first buffer parts; a first interval is formed betwee