Abstract: The technology of localized ultra-high frequency induction brazing is introduced.The effect of influence factors, such as material of ferrite core, gap and coil structure, on temperature in induction brazing are investigated and analyzed.An optimal combination of technological parameters is obtained through experiments.At last, localized ultra-high frequency induction brazing of diamond is carried out based on the above parameters.The result demonstrates that the width of melted area of filler alloy is less than 3 mm.The diamond is wetted by the filler alloy.The interfacial structure between diamond and filler alloy is investigated by scanning electron microscope(SEM) and energy dispersion spectrometer(EDS).The result shows that the bond between diamond and filler alloy is established through a cross-diffusion of carbon and chromium.