The invention provides a sealing and brazing method for a miniature connector and relates to the field of electronic packaging. The method comprises the following steps of cleaning, annealing, assembling, soldering, cooling and discharging. Compared with traditional brazing techniques, the pure nitrogen gas is adopted to replace the nitrogen-hydrogen mixed gas. The occurrence of brazing and sealing failures of the miniature connector, due to the hydrogen reduction effect, is greatly reduced. Meanwhile, the cost is lowered at the same time, and the process safety coefficient is improved.