The influence of E-B model parameters in high modulus zone on the finite element calculation results of ultra-high inlaid concrete faced rockfill dam is investigated in the present study. Based on the orthogonal test, the model parameters of the high modulus zone of the ultra-high inlaid concrete faced rockfill dam are taken as the main reference variables and their sensitivity on the dam settlement u₃、panel deflection w and slope stress σ has been analyzed. The results show that the bulk modulus radix K_b, internal friction angle φ and the bulk modulus index m have higher sensitivity, indicating a higher impact on the calculation result. However, the elasticity modulus K and the elasticity modulus index n have lower sensitivity relatively and the calculation result is less influenced. Thus, parameters of E-B model with high sensitivity should be taken as the main target in the inversion analysis to save the computational cost, and other parameters can be determined via engineering analogy. As a result, the purpose of improving the calculation efficiency under the premise of accuracy can be achieved.