Based on the successful applications of the ultra-thin-layer rehabilitation of airport runways， the properties of magnesia-phosphate cement-based material（MPC） were systematically studied， and its mechanism of rehabilitation was discussed. Results show that the MPC material has excellent bonding strength， salt-frost resistance， abrasion resistance and volume stability， and its thermal expansion coefficient and elastic modulus match well with the concrete of airport runway， which is beneficial to improve its stress fatigue resistance. These properties effectively ensure that MPC ultra-thin-layer rehabilitation of airport runways has high durability.