Abstract: In this paper, a triangular membrane element with drilling degres of freedom is devaloped by introduthe generalized bubble displacement in terms of internal parameters into its displacement field. Since fors addihoed displacemeknt field is constructed from the complete polynomial directly according to the generalized conforming condihons, the scope of solution is extnded wificantiy The Present element demonstrates attrachve merits, such as high Precision and less sendhvity to geometric distonioir A sbole and emcient method to modifydisplacementboe element is provided in this paper .