Construction and weighting of investment risk index system of general aviation industry based on entropy method

General aviation industry has great development potential in China. In recent years, general aviation industry has been widely valued by all walks of life due to its high industrial relevance. However, the investment risk of general aviation industry cannot be accurately estimated due to its large investment intensity and long effective time. So how to accurately measure the general aviation industry decision-making and implementation risk? In this paper, the risk measurement index system was constructed firstly, and then the combination weighting model is established by using entropy method, and the combination of the index system of the general aviation industry investment risk index is established.