The invention relates to brazing processes, particularly to a salt bath brazing process of a 6063 aluminum alloy. The process comprises the steps of pre-brazing preparation, heating, heat preservation, cooling and post-brazing treatment. The 6063 aluminum alloy brazed through the process has good mechanical performance and good physical performance. According to the salt bath brazing craft process of the 6063 aluminum alloy, the operation steps are simple, convenient and easy to master; constant temperature control is performed; heating is even and rapid; the quality of brazing seams is high; brazing of a large amount of brazing seams can be completed in one step, so that high production efficiency can be achieved. Therefore, the salt bath brazing craft process of the 6063 aluminum alloy is good in quality.