Abstract: Foam packing net can effectively reduce the probability of mechanical damage for spherical fruits during transportation, but there is few automatic foam packing net for fruit on the market at present. In order to solve this problem, in this study, a package technology with flexible expanding cone and inverted pricking chuck was proposed based on the analysis of the biomechanical properties of apple and navel orange. The key parts structure parameters of the machine were determined. The time sequence control of component movement was designed. Then, the test prototype was processed. The packaging experiments of 30 apple samples showed that the successful rate of packaging was 100%, the damage rate was 0, the average packaging time of single apple was 25 seconds, the working efficiency was 35 kg/h, and the length of the foaming nets were mainly distributed in the range of 104-110 mm which was 76.6% of the total samples. The experimental results showed that the design of the prototype mechanism was reasonable, the structure was compact, the spherical fruits were completely packed, and the continuous packaging function can be realized. However, the efficiency of the machine was lower than the manual efficiency. It was necessary to optimize the packaging process and use multiple groups of machine for improving the efficiency. The designed machine can provide reference for the development and optimization of the following spherical fruit net packing equipment.