Abstract: Aiming at the problem that conventional nondestructive testing methods cannot meet the inspection requirements of superconducting cable stainless steel weld and the higher inspection efficiency requirements, the eddy current array testing is used to detect the weld of the cable stainless steel pipe. By studying the testing frequency and lift-off effect on the detection signal, it was determined that the eddy current array detection process was suitable for thin-walled stainless steel sheath weld detection. Process verification on the specimens with artificial and natural defects was performed, and the X-ray and industrial computed tomography methods were adopted to verify the validity of the eddy current array testing results. Present work can provide a basis for the subsequent realization of online real-time testing of superconducting cable stainless steel sheath weld.