PROBLEM TO BE SOLVED: To provide a swallowing ability evaluation system capable of effectively evaluating a subject's swallowing ability, a swallowing ability evaluation method, and a swallowing ability evaluation program. A swallowing ability evaluation system performs a frequency analysis of swallowing vibration data obtained by measuring a swallowing vibration of a subject's swallowing sound and/or breathing sound accompanying swallowing motion, and generates a frequency analysis data. And an index value (low frequency index value) related to the low frequency region of the frequency analysis data and an index value related to the high frequency region (high frequency index value) based on the low frequency region data and the high frequency region data included in the frequency analysis data. And an evaluation processing unit that generates evaluation data regarding the swallowing ability of the subject, including an evaluation index value determined based on a comparison result between the low-frequency index value and the high-frequency index value. And an output processing unit that performs output processing of the swallowing ability evaluation result of the subject based on the evaluation data. [Selection diagram] Fig. 3【課題】被験者の嚥下能力を効果的に評価することができる嚥下能力評価システム、嚥下能力評価方法及び嚥下能力評価用プログラムを提供する。【解決手段】嚥下能力評価システムは、被験者の嚥下音及び／又は嚥下動作に伴う呼吸音に係る嚥下振動測定により取得された嚥下振動データの周波数解析を行い、周波数解析データを生成する周波数解析部と、前記周波数解析データに含まれる低周波数領域データ及び高周波数領域データに基づいて、前記周波数解析データの低周波数領域に関する指標値（低周波指標値）及び高周波数領域に関する指標値（高周波指標値）を決定する指標値決定部と、前記低周波指標値と前記高周波指標値との対比結果に基づき決定される評価指標値を含む、前記被験者の嚥下能力に関する評価データを生成する評価処理部と、前記評価データに基づき、前記被験者の嚥下能力評価結果の出力処理を行う出力処理部と、を含む。【選択図】図３
