Objective： To study the effect of excipient dosage on the rheological properties and preparation modeling quality of gel plaster of traditional Chinese medicine （TCM）， and explore the key rheological indexes which affect the modeling quality of gel plaster.,Methods,2,Taking the prescription of lumbar disc protrusion plaster as the model drug， through a single factor experiment， different dosages of sodium polyacrylate NP700， aluminum glycolate， carbomer and tartaric acid were selected to prepare the gel paste. One part of the pastes was used to test the rheological indexes including storage modulus （G'）， loss modulus （G"） and creep recovery rate［J（t）%］ by rheometer. The other part was prepared into the plaster， and the quality indexes of the plaster including surface smoothness and residual， bubble and particle， initial adhesion and so on were evaluated. Meanwhile， the correlation analysis between the rheological indexes of the paste and the modeling quality of the plaster was carried out.,Results,2,①NP700 mainly affected the initial adhesion， repeated exposure and thixotropy of the gel plaster through affecting the values of G′,ω=100,， G″,ω=0.1, and J（t）% of the paste. ②Carbomer mainly affected the initial adhesion， repeated exposure and thixotropy of the gel plaster through affecting the values of G′,ω=100, and G″,ω=0.1, of the paste. ③Aluminum glycolate mainly affected the initial adhesion and thixotropy of the gel plaster through affecting the values of G″,ω=0.1, and J（t）% of the paste. ④Tartaric acid mainly affected the smoothness and residual， initial adhesion， repeated exposure and thixotropy of the gel plaster through affecting the value of G′,ω=100, of the paste. Among them， the dosage of NP700 and aluminum glycolate had greater influence on the modeling quality of gel plaster of TCM.,Conclusion,2,Different excipient dosage has different effect laws on the rheological properties of the paste of gel plaster and the modeling quality of the plaster. The excipient dosage of gel plaster can be purposefully adjusted through detection of rheological indexes of the paste， so as to optimize the modeling quality of gel plaster.