Provided is a sensitivity evaluation system for estimating sensitivity of a subject from bio-information with high accuracy, including: an acquisition unit to acquire as biological data, a reaction of a sympathetic nervous system and a reaction of a parasympathetic nervous system a biological data analysis unit to judge from the obtained biological data, a candidate group of sensitivity factors that the subject has a positive/negative analysis unit to judge from information obtained from the subject, whether an inner state of the subject is pleasant or unpleasant and a comprehensive evaluation unit to integrat analysis results of the biological data analysis unit and the positive/negative analysis unit to estimate the sensitivity comprehensively.
