The purpose of this study is to clarify the characters between the site plan of the hydrotherapy room and patients' utilization. We sent the questionnaire about the patients' training plan in medical facilities especially in the hydrotherapy room. The results of this study are summarized as follows. 1. We need to consider the total training hour of hydrotherapy exercise and select hydrotherapy machines to higher the operating efficiency at the hydrotherapy room. 2. The hydrotherapy room should be located at easy access to the therapeutical excise room because about 30% of hydrotherapy patients tend to practice therapeutical excise also. 3. By classifying type of the site plan, we classified hydrotherapy room into four categories. The Involved type which is located next to the therapeutical excise room is major type out of four categories.
