The invention relates to an introduced optical cable water-proof and anti-freezing device which comprises an optical cable, a nylon connection pipe, an outer sleeve steel pipe and a steel pipe framework. The optical cable is arranged inside the nylon connection pipe and the outer sleeve steel pipe. The outer sleeve steel pipe is fixed on the steel pipe framework. A part of the nylon connection pipe and a part of the outer sleeve steel pipe are in sleeved connection. A thermal plastic pipe is arranged at the position where an upper opening of the outer sleeve steel pipe is connected with the optical cable. According to the introduced optical cable water-proof and anti-freezing device, the difficult problem that water is accumulated when the optical cable is introduced into a pipeline is solved, the water-proof effect can meet the technical requirement, the potential hazards that the optical cable is frozen in winter due to the fact that rainwater is injected into the pipeline with the introduced optical cable for a long time are solved, the operational reliability of the optical cable is improved, and unimpeded access to information of a power grid is ensured. Meanwhile, the cost, brought by former repeated maintenance, of manpower, materials, vehicles and the like is saved, other larger losses caused by the interruption of the communication optical cable are avoided, and considerable economic benefits are brought to the safe operation of the power grid.