This study prepared a modified pw-TiN composite with good dispersibility in the plating solution by using PANI and WS 2. Furthermore, the synergistic effect of CeO 2 and pw-TiN at different concentrations on the properties of Ni-W-P-based composite coatings is investigated. Results show that, compared to the pure coating, both Ni-W-P/pw-TiN and Ni-W-P/pw-TiN+CeO 2 (0.5, 1, 1.5, 2   g/L) composite coatings exhibit smaller grain size and improved compactness. When the CeO 2 concentration reaches 1   g/L, the coating achieves the highest hardness of 755.1 HV and the lowest COF av of 0.345, indicating superior mechanical performance among all samples. Additionally, the impedance of this coating in 3.5   wt.% NaCl solution reaches 62820 Ω·cm 2, and long-term corrosion tests further confirm its excellent protective ability. These improvements are attributed to the grain-refining effect of CeO 2 and its synergy with pw-TiN. However, excessive CeO 2 addition (1.5 and 2   g/L) leads to inferior performance compared to the coating with only pw-TiN, primarily due to particle agglomeration disrupting the coating structure.