The invention discloses a treatment method for a welding zone of a high-performance sulfur-resisting drill pipe body and a joint, which comprises the following steps: respectively carrying out overall quenched-tempered heat treatment on the pipe body and the joint with the same components, and then connecting the pipe body and the joint into a whole by friction welding; carrying out medium-frequency induction heating on the welding zone to 300 DEG C-600 DEG C, then carrying out stress-relief annealing, turning flashing and burrs, and carrying out post-welding heat treatment; carrying out medium-frequency induction heating on the welding zone to 780 DEG C-900 DEG C, preserving the temperature for 3-30 minutes, and then carrying out spray quenching by using a quenching medium of 20 DEG C-40 DEG C; carrying out medium-frequency induction heating on the welding zone to 690 DEG C-750 DEG C, preserving the temperature for 5-30 minutes, and then carrying out spray cooling by using a quenching medium of 20 DEG C-40 DEG C; and carrying out medium-frequency induction heating on the welding zone to 600 DEG C-700 DEG C, preserving the temperature for 5-30 minutes, and then air cooling to room temperature. After the drill pipe is treated by the method, the cracking-resisting capacity of the welding zone is improved, and the welding zone has appropriate strength, toughness, lower hardness and even distribution, thereby avoiding loss caused by sulfide stress corrosion cracking of the drill pipe.