This creation is a kind of expansion bottle and its diffusing structure. It is the first to bring powder metallurgy technology into the field of diffusing. The main system is: a powder-metallurgy technology die-casting expansion stick. The top of the spreader has a fixing hole and the upper end has a positioning flange； a bottle body having an upper joint portion and a lower joint portion； a base having a bottom portion closed to be fixedly coupled to the lower joint portion, and having a hollow boss at the center for inserting the spreader rod Positioning； a positioning ring, the positioning ring has a through hole, the positioning ring passes through the diffuser stick, and is fixed with the upper joint； an upper cover, the upper cover has a hole in the middle, and a lock is passed through the upper cover Perforate, lock the upper cover and the diffuser stick. This design can achieve the effect that the diffuser stick is not afraid of falling dust and mildew, the spreader bottle is not afraid of dumping, and is convenient for opening and closing.本創作係一種擴香瓶及其擴香結構，首創將粉末冶金技術帶入擴香領域，主要係：一以粉末冶金技術壓鑄而成擴香棒，該擴香棒頂端具有固定孔，上端具有定位凸緣；一瓶身，該瓶身具有上接合部及下接合部；一底座，該底座底部為封閉，與該下接合部產生固接，中心具有中空凸柱，供該擴香棒插入定位；一定位環，該定位環具有穿孔，該定位環穿過該擴香棒後，與該上接合部產生固接；一上蓋，該上蓋中間具有穿孔，由一鎖固件穿過該上蓋之穿孔，將上蓋與擴香棒鎖固。如此設計，可達到擴香棒不怕落塵發霉、擴香瓶不怕傾倒、方便開合收納使用的功效。
