The multidimensional weak link tracking and analysing software for power system is designed.Firstly，the overall design idea based on the autonomous decentralized model is described and the control logic based on time check and data driven is designed.Then，the hierarchical decoupling management framework is presented，while the functional modules are designed and managed using standardized interface.Finally，the multidimensional weak link tracking and analysing system is established using the design scheme presented.Case studies have verified the good adaptability of the designed system to the diversity of the weak link definition，weak link analytical methods，data sources and result display ways.