Abstract: Based on the research of LTE network evolution process, network architecture and interface protocol, the authors propose a software program solution for the conformance testing of X2 and S1 interface protocol. From the perspective of product realization, the software and hardware platform architecture of the solution is introduced. This solution provides an open user interface to support the custom test case extension and custom protocol development for the evolving network support in networking. Protocol emulation can support mutil-instance-many of the multi-interfance simulation. Emulation is a true simulation of a variety of control behaviors of network equipments and operational capabilities.