In this paper, the management philosophy of 'governance without unwanted action' of Taoism, 'to keep balance in each aspect' of Confucianism and 'governance with laws' of legalism are firstly discussed in detail. Then, the connotations of management philosophy and management and the relationship between them are discussed. The model of the modern cubic management is briefly introduced. Finally, the application and practice of the management philosophy of Taoism, Confucianism and Legalism in the establishment of the modern management model are studied and it is suggested that the idea of variation is necessary in the application of the management philosophy of Taoism, Confucianism and Legalism.