The utility model discloses a guipure preheat burner. Belong to the optical glass technical field that slightly anneals. It mainly is the poor problem of solving in the current annealing technique of annealing homogeneity. Its leading features is: including the co -combustion unit, this co -combustion unit adopts a burning section of thick bamboo of taking the flame projecting hole, is equipped with in the burning section of thick bamboo to be more than a set of, port confined natural gas intake pipe and combustion -supporting wind intake pipe, every group natural gas intake pipe and combustion -supporting wind intake pipe all are equipped with the water conservancy diversion hole, and length is the same, a burning section of thick bamboo is corresponding separates into each independent section, and the natural gas intake pipe and the combustion -supporting wind intake pipe length of each group are different, and each section independent with a burning section of thick bamboo combines the different co -combustion elementary section of formation, every group natural gas intake pipe and combustion -supporting wind intake pipe all are equipped with the governing valve. The utility model discloses a water conservancy diversion hole pipe realizes that the natural gas and combustion air's effective mixture and whole combustion unit pressure are evenly stable. The proportion of mixing in advance through the governing valve adjustment natural gas and air. It is abundant stable to make the flame burning.