Present invention is relative an algae culture system and the air mixture device of the same, the algae culture system includes a culture tank unit having a cylindrical container for containing the culture water an air guiding pipe extending to the inner of the container an air mixture device connected to the air guiding pipe for mixing an oxygen gas and a carbon dioxide gas and inject the matured gas into the culture water and a lighting device, the lighting device has a lighting unit, the lighting unit disposed in the center of the container, the lighting unit connected to a control circuit for control the wave length and the strength of the light generated by the lighting unit for appropriate the needs of the algae growth.本發明為一種藻類養殖系統及其氣體混合裝置,其中該藻類養殖系統包括:一養殖槽單元,具有一圓筒狀的槽體;一導氣管從該槽體的外側伸入於該槽體內部;一氣體混合裝置連接於該導氣管,用以將氧氣及二氧化碳混合後再經由該導氣管注入於養殖水中;及一光源裝置,具有一圓柱狀的發光單元,該發光單元設於該槽體的中心,該光源裝置具有一控制電路,用以控制該發光單元發出光線的波長及強度,以適合於該養殖槽內培養的藻類生長所需;藉由以上技術,本發明能夠控制藻類養殖槽內環境適合於藻類生長條件,以提高藻類養殖效率及品質穩定性。10‧‧‧養殖槽單元11‧‧‧槽體12‧‧‧蓋體13‧‧‧養殖槽出口14‧‧‧連接管15‧‧‧導氣管151‧‧‧出氣部16‧‧‧排氣孔20‧‧‧光源裝置21‧‧‧發光單元30‧‧‧氣體混合裝置31‧‧‧混合腔體32‧‧‧第二混合管33‧‧‧進口端34‧‧‧螺旋隔板35‧‧‧錐形端部36‧‧‧出口端40‧‧‧採集裝置41‧‧‧收集槽42‧‧‧過濾網43‧‧‧排放口44‧‧‧排放管45‧‧‧養殖水回收槽46‧‧‧養殖水循環管47‧‧‧污水排放口48‧‧‧循環泵浦50‧‧‧過濾裝置51‧‧‧過濾槽52‧‧‧水源53‧‧‧汲水泵浦54‧‧‧出水管55‧‧‧進水口56‧‧‧排污管
