In order to meet a demand for drilling at quarries in shenzhen,it was successful to use the high-frequency equipment to solder diameter 76 mm chipp bit,which filled in the gaps in the soldering of large-diameter chip bit in Changsha Institute of Mining Research. The author makes an emphatic description of induction principle,induction block design,soldering material selection and soldering process as a whole.what are presented will be undoubtedly helpful to the study and manufecture of Chip bit using the induction soldering.