Abstract: In order to improve the quality of sealing wax by hand, reduce the intensity of labor productivity, a new top-pouring wax technique for preserved eggs was designed. According to the manufacturing standards, a top-pouring machine for sealing wax on preserved eggs was developed. By designing and analyzing the machine, it was proposed that the wax content was closely related to the temperature of liquid paraffin and the speed of conveyor. The top-pouring wax experiment showed the wax content reduced as the temperature went up and increased as the conveyor speeded up. Based on the experiment results and production requirement, the optimal working condition for the machine was that the heating temperature was 105℃ in top-pouring box; motor frequency was up to 40 Hz. It can meet the production requirement.