A fanless negative ion wind aromatherapy device comprises a casing, a control circuit board, an essential oil tank, a heating element and an negative ion generating module. The control circuit board, the essential oil cartridge, the heating element and the negative ion generating module are mounted in an accommodating space inside the casing, and the control circuit board is electrically connected to an external power source to provide the heating component. And the electric power required by the negative ion generating module, the negative ion wind formed by the negative ion generating module, and the fragrance particles generated by the essential oil box are taken out outward after heating, thereby realizing a fanless and capable aroma particle Quickly fill the surrounding space to maintain the scent of the fragrance； in addition, negative ions are more likely to pass through the blood-brain barrier of the human body and are healthy.一種無風扇負離子風香薰裝置，包括一外殼、一控制電路板、一精油盒、一加熱元件及一負離子產生模組。其中該控制電路板、該精油盒、該加熱元件及該負離子產生模組係安裝於該外殼內部之一容置空間中，且該控制電路板電性連接一外部電力源，以提供該加熱元件及該負離子產生模組所需的電力，藉由該負離子產生模組所形成的負離子風，將加熱後該精油盒所產生之一香味粒子向外帶出，藉以實現無風扇且能將香味粒子快速充滿周圍空間，以保持清香的味道；另外，負離子更易於透過人體的血腦屏障而有益健康。
