Abstract: The invention relates to a QoX adaptive management-based context information uncertainty elimination system and a working method thereof. The system comprises a sensor module, a context information acquisition and modeling module, a context information threshold information preset module, an original context information detection module, an adaptive management module, an uncertainty elimination module, a context information correlation analysis module, an original context information flow reconstruction module, a compound context information flow module, a fusion and reasoning module, a context application layer adjustment module and a knowledge base.