Abstract: Abstract: Sensitivity Equations method was adopted to research on the interferometric parameters calibration problem based on 3D reconstruction model for the Dual-antenna Airborne InSAR. Interferometric parameters calibration is the key of building higher precision Digital Elevation Model (DEM). A new 3D reconstruction model was proposed based on Madsen’s reconstruction algorithm after adopting spherical wave model and joining the attitude rolling. According to different sensitivity of each interferometric parameter with respect to 3D information, Ground Control Points(GCPs)’ 3D information was proposed to calibrate interferometric parameters that was different from common interferometric parameters calibration just using height information. The calibration experimentation was adopted a set of InSAR data, derived by the Airborne InSAR system researched independently by Institute Of Electronics, Chinese Academy Of Sciences. The experimental results show that this method is efficient.