Abstract: A special wax for packaging was prepared with excellent performances in heat-resistance, low temperature resistance, water proof, and ventilation for a corrugated box factory. Taking the mixture of No.58 fully refined wax and No.70 microcrystalline wax as base wax, the effects of addition of additives, assistant, and antioxidant on the drop melting point, viscosity, and appearance of the base wax were investigated. An optimum formula for the packaging wax preparation was determined when the dosage of synthetic wax, additive B, assistant 1, assistant 2, antioxidant was 9.8%，6.5%，1.5%，2.1%，0.1%, respectively. The special wax prepared at 160 ℃, 30 min and stirring speed of 200 r/mim had the advantages of high melting point, strong adhesion and good luster, which can meet the quality and appearance requirements of the corrugated box factory.

Key words: water proof and moisture, corrugated box, special wax, kinematic viscosity