Authors　proposed　a　new　kind　of　calculation　method　of　the　fixed　angle　softened　truss　model　of　reinforced　concrete　membrane　elements,　its　calculation　procedure　was　from　stresses　to　strains.　The　new　method　had　better　reliability　and　was　more　convenient　in　reaching　correct　results　than　the　methods　provided　in　other　references.　The　descendant　stage　of　τlt-γlt　curve　could　be　predicted　when　the　new　method　was　applied.　The　calculation　results　of　six　panels,　which　are　gained　by　the　new　method,　coincide　with　test　data　quite　well.