Cable fireproof and moistureproof joint protection device

The utility model relates to the technical field of cable protection, and discloses a cable fireproof and moistureproof joint protection device, the left side of a cable joint is provided with two semicircular protection sleeves, the protection sleeves are combined into a ring, the bottoms of the protection sleeves are provided with limiting plates, and the limiting plates are arranged on the left side of the cable joint. Limiting holes are formed in the surfaces of the limiting plates, and limiting rods are inserted into inner cavities of the limiting holes. The protective sleeves can be clamped to the surface of a connected cable, the movable limiting plates can drive the protective sleeves to move, and the protective sleeves get close to each other and can be fixed to the surface of the connected cable, so that the cable connector is prevented from being loosened from a connecting port of another cable during shaking; the cable connector can be firmly connected with the connecting port, no gap exists betwe