The looseness or fall off of the clamp is one of the important factors for the failure of spacer bar. The research on the clamp strength is very important. Based on ANSYS finite element analysis software,non-linear emulation analysis is carried out. A reinforced spacer clamps was chosen as the object,using Mooney-Rivlin rubber constitutive model,simulating clamp for pre-clamping the wire by using pre-rigid displacement and simulating non-uniformloading conditions such as wire icing and winding by applying the tension along the line and rotarytorque load. Compared with experiment result,it shows that the strength and gripping performance of the new clamp satisfies the requirement of DL/T1098-2009,and the clamprubber spacer plays a role in reducing wear and protection. At the same time,the correctness of finite element model of spacer bar clamp is verified. It also provides useful reference for the clamp structure improvements,and lays the foundation for wind-resistant simulation analysis of high-voltage transmission line system.