The utility model relates to a portable ecological cylinder, which comprises a light transmitting cylinder body, a light emitting unit and a light transmitting medium layer.The light transmitting cylinder block comprises a holding space which is arranged in the interior and an opening which is arranged at one end and communicated with the holding space.The light-emitting unit comprises a power supply base connected at the end of the light-emitting cylinder body far away from the opening, at least one light-emitting element arranged at the end of the power supply base adjacent to the light-emitting cylinder body, and a power source end electrically connected with the light-emitting element.The transparent medium layer is arranged at the bottom end of the accommodation space.The user can carry the portable ecological tank to an environment free from time and space restrictions to watch it anytime and anywhere, so as to achieve the effect of cultivating the body and mind all the time.At night, the luminous element can irradiate a plurality of luminous sands or glazes placed in the light transmitting medium layer to produce special landscapes such as blue light or green light, so as to help improve the body and mind of users and the growth of aquatic plants in the tank.一種可攜式生態缸，其包含有一透光缸體、一發光單元、以及一透光介質層。該透光缸體包含有一開設在內部的容置空間、以及一開設在一端且相通該容置空間的開口。該發光單元包含有一連接在該透光缸體遠離該開口一端的電源座、至少一設置在該電源座鄰近該透光缸體一端的發光元件、以及一電性連接該發光元件的電力來源端。該透光介質層容置在該容置空間底端。使用者可將該可攜式生態缸攜帶至不受時間、空間限制的環境中以隨時隨地都能觀賞而達到無時無刻都能陶冶身心靈的功效。且夜間時，更可透過該發光元件照射置放在該透光介質層的複數夜光砂或琉璃石，使其產生如藍光或綠光等特殊景觀以更加幫助改善使用者的身心靈及對缸內水草生長有助益。
