Abstarct: Nowadays, with the significant increase of the need to carry out excavation in urban areas, it is necessary to properly control the deformations caused by excavation in order to ensure safety and cost effective operation in the vicinity of structures and municipal facilities. In this research, the deformations of an excavation for different values of the modulus of elasticity obtained from geotechnical tests (including pressuremeter, SPT and three axial) and using three constitutive soil model of Mohr-Coulomb (MC), Hardening soil (HS) and Hardening small strain (HSS) have been investigated in Plaxis 2D finite element software. By comparing the results of modeling and results from the monitoring of the excavation to a depth of 25 meters, which was supported by anchored soldier pile system in Mashhad city, it was shown that the elastic modulus obtained from the pressuremeter test is more appropriate than the three-axial and SPT tests in the excavation analysis. HSS constitutive model yielded the most accurate results and MC constitutive model has the highest error, so it is recommended that the MC model should not be used in excavation analysis. Parametric study was also performed to determine the sensitivity of excavation displacement to soil engineering parameters (including stiffness, internal friction angle and cohesion) and various parameters such as maximum horizontal and vertical displacements, displacement profile and ... for different values of soil engineering parameters were investigated.