For the pressure-bearing stainless steel pipe for oil field, the laser welding and high-frequency welding test are carried out using 1Cr17Mn6Ni5N stainless steel (16Cr stainless steel) steel plate. The macroscopic morphology and microstructure of the weld were observed by OM and SEM, and the mechanical properties of the welded joint were tested. The results show that the laser weld has good weld formation, uniform microstructure, little difference between hardness and base metal, good bending performance and resistance. The tensile strength is 701 MPa. The high-frequency welding seam has the wrong side, the microstructure is not uniform, the ferrite content is high, the weld hardness is higher than the base metal 60 HV, the weld is cracked during bending, and the tensile strength is 679 MPa. It can be seen that laser welding of 16Cr stainless steel can obtain a good welded joint, so the laser welding method is selected to continue the process research.