To improve the symptoms of sleep apnea syndrome. An assisting device for improving symptoms of sleep apnea syndrome extends to a portion to be clamped between upper and lower anterior teeth of a patient and a vicinity of a soft palate of the patient, and is directed toward a hard palate so as to cover a tongue. And a tongue pressing portion 20 formed of a plate-like elastic body that is curved and extends in the left-right direction of the patient. [Selection diagram] FIG.【課題】睡眠時無呼吸症候群の症状を改善する。【解決手段】睡眠時無呼吸症候群症状改善用補助器具１は、患者の上下の前歯によって挟持される被挟持部１０と、患者の軟口蓋近傍まで延びるとともに、舌を覆うように硬口蓋へ向けて湾曲して患者の左右方向に延びる板状の弾性体からなる舌押圧部２０とを備えている。【選択図】図８
