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The health monitoring for large-scale structures need to resolve a large number of difficulties, such as the data transmission and distributing information handling. To solve these problems, the technology of multi-agent is a good candidate to be used in the field of structural health monitoring. A structural health monitoring system architecture based on multi-agent technology is proposed. The measurement system for aircraft airfoil is designed with FBG, strain gage, and corresponding signal processing circuit. The experiment to determine the location of the concentrate loading on the structure is carried on with the system combined with technologies of pattern recognition and multi-agent. The results show that the system can locate the concentrate loading of the aircraft airfoil at the accuracy of 91.2%.