The hand hygiene moment measuring system of the present invention includes a subject sensing device (2) to sense a subjects position and posture, a movement sensing device (3) to sense a subjects movement, a storage unit (4) to store particular combinations corresponding to hand hygiene opportunities, and a counter (5) to count a number of times combinations of a sensing information of the subject sensing device, a sensing information of the movement sensing device, and an object position information indicating a position of an object, achieved the combinations stored in the storage unit.