Low-voltage insulated wire connection interface protection device

The invention discloses a low-voltage insulated wire connection interface protection device. The protection device comprises a transparent shell and silica gel, the surface of the transparent shell is coated with a heat-sensitive material, the surface of the inner side of the transparent shell makes contact with the silica gel, the silica gel wraps a wire connection interface, the transparent shell is provided with an injection port, the injection port is provided with a waterproof plug in a matched mode, waterproof adhesive tapes are arranged at the openings in the transparent shell, and a plurality of waterproof adhesive tapes are arranged at the openings of wires. The wire joint is sealed and protected by the silica gel and the transparent shell, so that the wire joint is isolated from external air, water and other impurities, and the wire joint is prevented from being in contact with the air, the water, the impurities and the like to cause oxidation corrosion; and the heat-sensitive material on the transp