PROBLEM TO BE SOLVED: To provide a suction device with a water injection function without liquid leakage. A suction device main body, a suction path, a water injection path, and a flexible tube are provided, and a second switching mechanism is used to connect or close the suction path and the flexible tube by a first switching mechanism. The water injection path and the flexible tube are closed or communicated with each other by a mechanism, a first switching mechanism is installed in a first section in the suction device body, and the second switching mechanism is the conversion mechanism and the conversion mechanism. A blocking valve installed in the water injection path between the flexible tube and the flexible tube is more opposite to the flexible tube than both the first switching mechanism and the conversion mechanism. Suction device with water injection function located at the side position. [Selection diagram] Figure 1【課題】液漏れのない注水機能付き吸引装置を提供する。【解決手段】吸引装置本体と、吸引経路と、注水経路と、可撓管とを備え、第一の切替機構により前記吸引経路と前記可撓管との連通または閉鎖に伴い、第二の切替機構により前記注水経路と前記可撓管とがそれぞれ閉鎖または連通され、第一の切替機構が前記吸引装置本体内の第一の区画に設置され、前記第二の切替機構が前記変換機構と前記可撓管との間の前記注水経路内に設置され、前記第二の切替機構に含まれる閉塞弁が、前記第一の切替機構および前記変換機構の双方よりも、前記可撓管とは反対側の位置に配置されている注水機能付き吸引装置。【選択図】図1