Abstract: Surface modification of ZrWMoO₈ with different morphology by silane coupling agent KH-550 was performed. The changes of the ZrWMoO₈ performances after modification have been carried out by infrared spectrum (FTIR), contact angle tester, scanning electron microscope (SEM), and X-ray diffraction (XRD).Results show that the crystal structure was not changed, but the contact angle was became larger, the hydrophobic was enhanced, the powder agglomeration phenomenon reduced, and the dispersity was enhanced after ZrWMoO₈ was modified by the silane coupling agent.