The fieldbus technology is now at the key moment changing from the old to the new. The development of the customer demand has put forward the higher request to the existing fieldbus and the progress of the new communication technology has also provided the powerful support for the development of new fieldbus. Based on the introduce of the development of bus technology and unified the martial application background, this paper combs the technical characteristics of measurement bus and control bus. Through the analysis of the debate on those fieldbus standards, the importance and function of the fieldbus in the industrial production has been analyzed. The domestic research and development situation about instrument bus and fieldbus has also been analyzed. After analyzing the application characteristics and application requirements about military fieldbus, this paper expounds the factors that must be considered in the independent research and development in the field of military fieldbus. Finally it forecasts the possible metrics of next generation military Fieldbus.