This creation fever mat structure includes a flexible printed wiring board, has a plurality of heater elements； Two exterior waterproof coatings, to accommodate the flexible printed wiring board； And a charging power cord, it is electrically connected the what flexible printed wiring board. Inner waterproofing layer inner waterproofing is laminated. There is pliability docile nearly user's body and can have splendid waterproof effect for thereby structure, the heating pad of this creation, and is suitable for what and generally lives or cold environment and underwater thermal effect.本創作發熱墊結構包括一軟性印刷電路板，具有複數個發熱元件；兩外防水層，用以收容該軟性印刷電路板；以及一充電電源線，係電性連接於該軟性印刷電路板。內防水層內防水層一面。藉此結構，本創作之發熱墊具有柔軟度可服貼近使用者身體並具極佳防水效果，而可適應於一般生活或寒冷環境及水面下保暖作用。
