Portable USB leakage preventing glue gun

The invention relates to a portable USB leakage preventing glue gun. The portable USB leakage preventing glue gun comprises an outer shell I and an outer shell II. The outer shell I and the outer shell II are fixedly connected to form a cavity, and a trigger assembly is arranged at the upper portion of the cavity. The trigger assembly is provided with a vertical fixing hole, and cylindrical adhesive tape fixedly penetrates the hole. Silica gel II is arranged at the connecting position of the adhesive tape and an inlet of the fixing hole of the trigger assembly, and return force silica gel I is arranged at the connecting position of the adhesive tape and an outlet of the fixing hole of the trigger assembly. Meanwhile, the end portion of the adhesive tape is fixed into a heating assembly with a hot melt adhesive nozzle. The bottom of the outer shell I is connected with a USB power line. A fixing iron wire frame is arranged on a shell on the periphery of the heating assembly. The portable USB leakage preventing