A kind of aroma diffusing machine and essential bottle structural improvement,It includes base station,Holding part is equipped in the base station,The holding part is equipped with limiting slot again,The base station front end is equipped with outer cover again； Upper cover,Above the settable what base station Hou end of the upper cover,It is equipped in the upper cover again by holding division,The upper cover top is equipped with spout； Support base,Below the settable what board Hou end of the support base； Liftable lid,There is an accommodating space in the liftable lid,The accommodating space can be corresponding with holding part position again； Bottle body,The bottle body one end is equipped with holding division,The holding division it can mutually be fixed setting by holding division with upper cover again,The bottle body side is equipped with limiting section,The limiting section can mutually agree with limit with the limiting slot of base station its holding part； By the upper cover, it by holding division can mutually fix setting by its holding division with bottle body,And it is equipped with limiting slot through its holding part of the base station,The bottle body side is equipped with limiting section again,And the effect of making user's what can reach accurate assembling when assembling,And then reach the purpose for promoting replacement bottle body speed.一種擴香機及香精瓶結構改良，其包含基台，該基台內設有容置部，又該容置部設有限位槽，又該基台前端設有外蓋；上蓋，該上蓋可設置於基台後端上方，又該上蓋內設有被卡固部，該上蓋頂端設有噴口；支撐底座，該支撐底座可設置於機台後端下方；可掀式蓋體，該可掀式蓋體內具有一容置空間，又該容置空間可與容置部位置相對應；瓶體，該瓶體一端設有卡固部，又該卡固部可與上蓋其被卡固部相卡固設置，該瓶體一側設有限位部，該限位部可與基台其容置部的限位槽相契合限位；藉由該上蓋其被卡固部可與瓶體其卡固部相卡固設置，並透過該基台其容置部設有限位槽，又該瓶體一側設有限位部，而使得使用者於組裝時可達到準確組裝之功效，進而達到提升更換瓶體速度之目的。
