The invention discloses an algae cultivation device, which comprises an upper cover, a lower cover component, a fluid conduit, at least two support rods and a plastic bag.The upper cover includes a first fluid channel, and the lower cover assembly includes a second fluid channel.The fluid conduit is vertically arranged between the upper cover and the lower cover assembly, and the fluid inlet of the fluid conduit corresponds to the second fluid channel, and the fluid outlet is located between the top end and the fluid inlet.The support rod is arranged between the upper cover and the lower cover assembly.The plastic bag includes an open end and a closed end, the open end is connected to the upper cover, the closed end is arranged on the lower cover assembly, and one end of the second fluid channel passes through the closed end of the plastic bag.Through the setting of fluid pipe and plastic bag, the problem of high cost and low yield of closed culture system is solved.本創作揭露一種藻類培養裝置，其包括一上蓋、一下蓋組件、一流體導管、至少二支撐桿以及一塑料袋。上蓋包括一第一流體通道，下蓋組件包括一第二流體通道。流體導管垂直設置於上蓋及下蓋組件之間，且流體導管的流體入口對應於第二流體通道，流體出口位於頂端及流體入口之間。支撐桿設置於上蓋及下蓋組件之間。塑料袋包括一開口端及一封閉端，開口端連接於上蓋，封閉端設置於下蓋組件，且第二流體通道的一端穿過塑料袋的封閉端。藉由流體導管及塑料袋的設置，以解決習知密閉式養殖系統成本高且產量低的問題。
