The invention relates to a method for preparing an integrated optical cable of a fibre reinforced plastic reinforcement and an optical cable. The method comprises the following steps: placing a fiber optics bundle on a pay-off-rack controlled by tape tension; placing the fiber optics bundle on the center of a plurality of bundles of reinforcing fibers after surface process through a tension controlling wheel; placing the fiber optics bundle and the reinforcing fibers together in a resin groove which is added with a curing agent, and socking the two in the resin; feeding the fiber optics bundle and the reinforcing fibers after being socked into the resin into a thermoforming mould, and carrying out solidification moulding in the mould together; and finally placing the fiber optics bundle and the reinforcing fibers after the solidification moulding into a coating moudling mould and coating the resin so as to enable the fiber optics bundle to be solidified into the fibre reinforced plastic reinforcement to prepare the integrated optical cable of the fibre reinforced plastic reinforcement. The prepared integrated optical cable of the fibre reinforced plastic reinforcement and the optical cable thereof have excellent side pressure resistance, and optical cable has small diameter, light weight, and can meet the utilization in high side pressure application scene in FTTH construction.