65%。Effects of different additive on physical properties and natamycin on antibacterial property of natural fruit wax were studied, and the preparation technology of preservative fruit wax was proposed which was composed of shellac 120g/L、morpholine 20mL/L、propanediol 10mL/L、ammonia 12mL/L,the emulsion time was 30min, and 0.6g/L natamycin was added when the temperature was down to 60℃. The glorious orange and grapefruit were with good quality and appearance after being coated by this preservative wax under 5～10℃ and 60%～65%RH for 45d, furthermore, the weight loss rate was about 70% lower than uncoated fruits and the good quality rate was enhanced to 65%.