PROBLEM TO BE SOLVED: To provide a behavior estimation system, a behavior estimation method, and a program capable of easily grasping the behavior of a moving body within a predetermined area. A behavior estimation system includes a first communication device provided at at least one position in a predetermined area and a second communication device provided on the moving body when the moving body is present in a predetermined area. For learning the acquisition means 41 for acquiring information on the received signal strength when the other receives the radio signal transmitted from any one of the above, the transition of the acquired received signal strength, and the transition of the received signal strength. It includes a learned model based on machine learning used as data, and an estimation means 42 for estimating the behavior of a moving body based on the learned model. [Selection diagram] Fig. 4
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