Abstract: According to the actual situation of Chinese mango industry, a 6MX-600 fresh mango-preserving machine was designed. The main technical parameters, which were tested by the Tropical Corp Machinery Quality Supervising and Testing Center of Chinese Agricultural Ministry, are as follows: productivity: ＞1.1 t/h; Wood consumption:10～13 kg/t; Solution consumption: 13～24 kg/t; Gross weight of the machine: 96kg;Overall size (L×W×H):2.4 m×1.1 m×2.7m; Volume of the solution container: 600 L. This machine has simple structure and is easy to assemble and disassemble. The heating temperature can be controlled easily. The effect of fresh preservation is good. The cost of fresh preservation is low. It is suitable for the post harvest treatment for mango indoor or outdoors near the orchard. In particular, if the orchard is out-of-the-way and short of electric energy, the machine is the best choice for the post harvest treatment for mango.