Self-lubricating polyphenylene sulfides (PPS) were obtained by in situ construction of the ordered polyamide 66 (PA) microfibrillar structure and polytetrafluoroethylene (PTFE) fibers, as induced by high-shear force fields in thin-wall injection molding (TIM). The average friction coefficient and specific wear rate of PPS/PA/PTFE20 composites reached 0.114 and 7.149 X 10(-6) mm(3)/Nm, respectively, of which the former is 27.4% lower than that obtained from conventional injection molding. The worn surface of PPS/PA/PTFE composites prepared by TIM displayed a much smoother and more stable transfer film coupling with the homo-dispersed F element, which greatly improves the tribological properties of subsequent moldings. This study provides a novel perspective for improving the tribological performance of engineering plastics by systematically tailoring the microstructure.