Abstract: In view of the modern coal winning machine CNC operation demand, brand construction,modeling design and the operating personnel to improve security requirement, this paper analyzed the characteristics of coal winning machine ergonomics form design, the shortage of the present situation and existence, and the principle of genetic algorithm and application scope. In discussing the characteristics of the human-computer interaction, the algorithm based on the basis of the proposed genetic algorithm was applied to product ergonomics form design the genetic code, the generation of initial population, fitness function of the structure and population selection method. Finally, in the design of the coal winning machine, for example, expounds the interactive genetic algorithm in product ergonomics form design application.