The invention relates to a multi-function of the volatile aromatic oils and dehumidification device. There is a spacer in the cabinet and its internal spatial separation of the power supply area, water storage area and the area of volatile oils. And whose every feature on-chip interconnected vent, and bamboo charcoal filter installed on the vent clean sheet. We set two thermoelectric chips, and let the cold side corresponding to the storage area, and then with a power supply and fan unit to the power supply area. Thereby, by turn on the fan and the outside air introduced into storage area, so that the cold end of the thermoelectric chip instant cooling, condensation of water molecules in the air, and then dropped on the discharge storage area. Meanwhile, the two thermoelectric waste heat from the chip lead to volatile oil region, with the waste heat generated by the thermoelectric chips to make heating oil, to the aroma of fragrant effect. Let air flow through the volatile region and the aroma of essential oils and heat discharged by the fan unit.Reach space fragrance effect, and both remove moisture and harmful substances.