Aiming at the demands of support equipment, puts forward a method of requirements analysis of support equipment system based on axiomatic design (AD) and theory of inventive problem solving (TRIZ). The concepts of the AD and TRIZ are introduced, following the requirement analysis thread of “requirement-mission-function-equipment”, proposes requirements analysis models of support equipment system, using AD designs support equipment system. When appearing requirements contradiction, using TRIZ resolves contradiction of system design. This method achieves rationality and innovation of system design，fits for requirements analysis of support equipment system.