The present invention relates to a sleeping aid, which surrounds the head of the user taking a sleep to emit a far infrared ray, anion, or a fumigant, which is beneficial to the human body, and to take a good night's sleep, and to promote metabolism inside the human body to promote good health The purpose is to provide a sleeping aid.;The present invention for achieving this purpose, and the support member 4 made of a flat plate to be easily placed on the bottom surface; A cover member 6 having one end detachably coupled to a rear end of the support member 4 and extending in parallel with the support member 4 at a predetermined height; Removably fixed to one side end of the support member 4 and the cover member 6, only the inner wall surface 12 is formed to be ventilated, the box-shaped with the receiving door 14 formed on the outer wall surface 10 A receiving member 8; A heater (30) which is internally receivable in the housing member (8) and generates heat according to electricity and heats a substance beneficial to the human body to emit far infrared rays, anions, or a fumigator; And, it characterized in that it comprises a side wall member 20 fixedly coupled to the other end of the support member 4 and the cover member (6).
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