Aiming　at　the　question　of　the　application　of　extension　model　based　on　vague　sets　and　soft　sets,　this　paper　discussed　some　related　questions　of　Gastric　disease　auxiliary　diagnosis　based　on　Vague　soft　sets.　A　novel　method　is　introduced,　which　can　calculate　the　relationship　between　the　different　decision　parameters　under　constraint　conditions　based　on　the　complex　relation　of　Vague　soft　sets.　The　experimental　results　show　that　this　method　is　effective　and　practical,　which　has　a　good　application　prospect　in　the　study　of　disease　auxiliary　diagnosis.　©　2017　IEEE.