The present invention discloses a waterproof and anti-freezing pipeline optical cable. The optical cable comprises a protective tube. A bearing plate is fixed inside the protective tube. The bearing plate is provided with three through holes arranged at equal intervals. An optical cable body penetrates through the through holes. The optical cable body sequentially comprises a calcium carbonate powder layer, a waterproof layer and a sheath layer from inside to outside. A reinforcing core penetrates through the middle part of the calcium carbonate powder layer. The calcium carbonate powder layer is equidistantly provided with a plurality of fiber cores and a glass fiber wrapping layer is wrapped outside the fiber cores. One side of the protective tube is provided with a hot-air blower. According to the technical scheme of the invention, the hidden trouble that the optical cable is frozen in winter due to the flowing of the rainwater into the optical cable over a long period of time can be solved. The running reliability of the optical cable is improved, and the information accessibility of the power grid is ensured. Meanwhile, the cost of manual work, materials, vehicles and the like caused by conventionally repeated maintenance operations can be saved. Meanwhile, the larger loss due to the interruption of a communication cable can be avoided. As a result, considerable economic benefits are generated for the safe operation of the power grid, and the optical cable is suitable for popularization.