Research On Earnings Quality Evaluation Of Civil Aviation Enterprises ——A Case Study Of China Southern Airlines

The development of civil aviation enterprises represents the degree of reform and opening up of China and the market-oriented economy’s growth,which has a considerable impact on national security,which has become an indispensable and important part of transportation system in China.An effective surplus quality evaluation system can improve the operating efficiency,increase profitability and reduce financial risks of civil aviation enterprises,which is of great practical significance to the development of civil aviation enterprises.Based on the summary of theories and methods of surplus quality at home and abroad,this paper studies the characteristics of civil aviation enterprises and the influence of these characteristics on surplus quality based on the current industry characteristics and the current situation of surplus quality in civil aviation enterprises.Combining the current status and problems in the evaluation of surplus quality in civil aviation enterprises,it explores the influencing factors that affect the surplus quality of civil aviation enterprises and finds indicators that can replace the influencing factors,so as to determine the initial evaluation system of surplus quality of civil aviation enterprises based on profitability,growth,cash security,safety and sustainability comes to the following conclusions after research:1.Taking 33 listed civil aviation transportation companies in China’s Shenzhen and Shanghai A-share market from 2015 to 2019 as samples,a total of 23 financial statement variable indicators with differentiation are selected with the help of spss22.0statistical analysis software to analyze the samples.K-S normal distribution test,significance test-t test and nonparametric test Kruskal Wallis h test are used to screen the variable indicators that can significantly distinguish earnings quality.Then,through the principal component analysis method,find out all the characteristic roots whose eigenvalue is greater than 1,take the number of characteristic roots as the number of principal components under the condition that the cumulative contribution rate of characteristic root variance reaches 70%,and determine the weight of each index in combination with the molecular score coefficient matrix to form a comprehensive earnings quality evaluation system.2.Applying the index system to the earnings quality of China Southern Airlines,it is found that the non operating profit and loss conceals the real earnings quality of China Southern Airlines,the lack of profitability and sustainability,and the low inputoutput ratio.3.In view of the problems existing in the earnings quality of China Southern Airlines,this paper puts forward some suggestions on paying attention to the guarantee of cash flow,strengthening the control of the input-output ratio of costs and expenses,and reducing the proportion of non operating profits and losses in the total profit.3.In view of the problems existing in the earnings quality of China Southern Airlines,this paper puts forward some suggestions on cash flow guarantee,strengthening the inputoutput ratio of control costs and reducing the proportion of non operating profits and losses in total profits.In the study of taking Southern Airlines as an example,it enriches the perspective of earnings quality evaluation of civil aviation enterprises,and has a certain reference significance for the earnings quality evaluation of other industries in China.