PROBLEM TO BE SOLVED: To provide an emotion analysis device, an emotion analysis system, an emotion analysis method and a computer program for analyzing emotions of event participants based on the intention of an event creator. SOLUTION: In an emotion analysis system 1, a server functioning as an emotion analysis device for analyzing a user's emotion indicates a measured value of a physical quantity related to the user's emotion, and at least one of a measured time and a measurement location of the physical quantity. A second acquisition unit 42a that acquires a first attribute value, and a second that is a value of the same type as the first attribute value and indicates at least one of an expected time and an expected place indicating a preset time and place, respectively. The second acquisition unit 42b for acquiring the attribute value and the expected value of the physical quantity at at least one of the expected time and the expected place indicated by the second attribute value, the measured value acquired by the first acquisition unit, and the first attribute value. , A calculation unit 42c that calculates an evaluation value indicating the similarity between the measured value and the expected value based on the expected value and the second attribute value acquired by the second acquisition unit. [Selection diagram] Fig. 2
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