The utility model relates to a positioning device of a water pumping pipe for aquarium, which is used for suspending and positioning a water pumping pipe on one side wall of a box body, and the positioning device comprises a suspension unit. The suspension unit includes a suspension section in inverted U shape for hanging on the side wall and a suspension section extending laterally from the suspension section for the water extraction pipe to pass through. With the above design, the pumping pipe can be simply and quickly fixed, and the overall design structure is simple, beautiful and generous, and it can also adapt to the thickness of the side wall of different sizes, with high applicability.一種水族用抽水管之定位裝置，用以將一抽水管懸掛定位於一箱體的其中一側壁上，該定位裝置包含一懸掛單元。該懸掛單元包括一呈倒U形且用以掛設於該側壁上的掛置段，及一由該掛置段橫向延伸且用以供該抽水管穿設的懸掛段。藉由上述設計，可以簡單快速地將抽水管固定，且整體設計結構精簡、美觀大方，還能因應不同尺寸之側壁的厚度，適用性高。
