Furnace top combustion gun capable of being added with glass pieces

The invention discloses a furnace top combustion gun capable of being added with glass pieces, which comprises a spraying pipe, wherein the spraying pipe comprises three layers of pipes sleeved inside and outside; an inner pipe is communicated with a combustion air source; an intermediate pipe is communicated with a glass piece adding device; and an outer pipe is communicated with an air or oxygen source. The added glass pieces provided by the invention are not added through a material adding system of a kiln, but are added through a combustion gun individually, and are not required to be smashed to the granularity required by the raw material, also the glass pieces are preheated during the falling process of the glass pieces, the energy source consumption quantity can be reduced obviously, meanwhile, organic matters on the surfaces of the glass pieces are vaporized rapidly at high temperature, and a glass liquid is prevented from generating air bubbles.