Abstract: The resistance welding technology of carbon fiber/polyphenylene sulfide (CF/PPS) composites for aircraft structure was studied. The resistance welding of CF/PPS composite laminates were successfully fabricated by using CF/PPS composite blended fabrics as resistance elements. Taguchi method and variance analysis were used to obtain the optimum parameters (current is 12 A, pressure is 1.5 MPa, time is 30 min) of resistance welding of CF/PPS composite laminates. The contribution of each welding parameters to the shear strength of welded were obtained (current is 83.37%, pressure is 9.55%, time is 6.02%). The single lap shear strength of welded was about 17.88 MPa with the optimum welding parameters. Meanwhile, the cross-section and shear failure fracture morphology of welded joints were observed and analyzed with the welding specimens with optimum parameters(H-LSS) and the lower shear strength specimen(L-LSS). The results show that the weld area of H-LSS sample is well filled and infiltrated, and the main failure mode is interlaminar shear failure, which involves damage to the adherends, the heating element or both of them. The welded area of L-LSS specimen has poor resin filling and wetting, and there are more voids, and the shear failure mode is interfacial shear failure and occurs at the interface between the weld and adherends.