The invention discloses a lead-free high-frequency 
brazing method for a deformed 
zinc alloy grafting structure. The lead-free high-frequency 
brazing method is characterized by comprising the following steps of: a, inspection process: inspecting a weldment and a 
brazing filler metal; b, treatment process before assembling: using 
abrasive paper to 
grind a brazing part, and using 
acetone to clean the brazing part; c, assembling process: inserting a 
zinc alloy bar in an inserting hole, keeping the 
zinc alloy bar in an upright state and inserting the zinc alloy bar to the bottom, annularly sleeving the the brazing 
filler metal at a part to be brazed, and 
coating a brazing flux at a brazing seam; d, high-frequency sensing brazing process: adjusting specification parameters according to the type of a brazing 
machine to weld; and e, treatment process after brazing: timely using clear water to clean residuals at the brazing seam. Compared with the existing technology, the lead-free high-frequency brazing method has the advantages that: the lead-free brazing 
filler metal is used so that the working condition is greatly improved, the lead-free high-frequency brazing of the deformed zinc alloy is achieved by the the steps of assembling before brazing, the adjustment of the high-frequency sensing brazing process parameters and the treatment after brazing, the obtained brazing seam is full and smooth, and the connection strength is improved.