To provide a heat-generating aid capable of providing a feel close to human skin at the time of use, and further improving feeling of genuineness and comfort.SOLUTION: The heat generation aid includes a columnar body 10 and a heat generating portion 20. The columnar body 10 is an accommodation body and includes an enlarged end portion 11, a passage opening portion 12, and a pressurizing passage 13 communicating the enlarged end portion 11 and the passage opening portion 12. The enlarged end portion 11 has a vent hole 111, and the ventilation hole 111 penetrates the columnar body 10 serving as a housing body and the heat generating portion 20 as a heat generating layer and communicates with the outside, whereby air can flow in and out. The passage opening 12 is distant from the enlarged end portion 11 and the inner diameter of the pressing passage 13 is smaller than the inner diameter of the enlarged end portion 11. The columnar body 10 has a surface layer 10 a, the heat generating portion 20 is brought into close contact with at least a part of the surface layer 10 a, and the surface layer 10 a is an inner surface layer of the columnar body 10.(FIG.【課題】使用時に人肌に近い触感を提供し、迫真感と快適性をさらに向上させることができる発熱補助具を提供する。【解決手段】発熱補助具は、柱状本体１０と、発熱部２０とを含む。柱状本体１０は収容体であり、拡大端部１１と、通路開口部１２と、拡大端部１１と通路開口部１２を連通する押圧通路１３とを備える。拡大端部１１は、通気孔１１１を備え、通気孔１１１は、収容体なる柱状本体１０と発熱層なる発熱部２０を貫通して外部と連通することで空気が流入、流出することができる。通路開口部１２は、拡大端部１１から離れており、且つ、押圧通路１３の内径は、拡大端部１１の内径よりも小さい。柱状本体１０は、表層１０ａを備え、発熱部２０は、表層１０ａの少なくとも一部に密着され、表層１０ａが柱状本体１０の内面層である。【選択図】図２
