Uu is defined as the interface between UE and base station, and which undertakes the establishment, reconfiguration, release of wireless carrier service, guarantees the interconnection and intercommunication of equipment from different manufacturers. LTEAdvanced uu monitoring instruments based on the most complex protocol provide detection and inspection method for uu wireless signals and thirdparty evaluation tool for conformance testing of UE and networks. The conceptual design scheme for LTEAdvanced uu monitoring and analyzing instrument is introduced in the paper. Furthermore, the key technologies including multiuser random access, uu protocol analysis, security algorithm, carrier aggregation and multiuser behavior sensing are adopted to realize the function of L1, L2, L3 protocol analysis for LTEAdvanced uu, cross level correlation analysis, 5carrier aggregation analysis, 48user service tracing, signal processing and user behavior monitoring. All testing process accord with standard protocol flow, and the results are full agreement with the actual behavior of UE and base station. Therefore, the testing means for fault diagnostics and locating of equipment interconnection and intercommunication are provided, and it makes great sense for TDLTEAdvanced network construction and optimization.