The military is pushing airworthiness examination in military aircraft development process to assure the security by drawing lessons from civil aircraft airworthiness management. Accordingly, aircraft development unit have to find out how to implement the requirements of airworthiness and integrate airworthiness with safety design. In this paper, the relationship between airworthiness and safety from the view of military aircraft design unit is explored and the similarities and differences between airworthiness work and safety work is compared. A proposal of how to combine airworthiness with safety management, design, evaluation and how to work efficiently is offered for an actual project. It can effectively avoid incoordination or even contradictory situation between the airworthiness work and safety design work. It can be the reference for the military airplane designers.