This creation department provides a one-handed water sprinkler, and the problem to be solved is that the user who exists in the conventional water spray gun must operate the water spray gun through both hands, and the operation thereof is not convenient, thereby causing the user to work. The problem of inconvenience is to improve the breakthrough； the one-handed water sprinkler comprises: the main body comprises a handle, an outlet pipe and a valve body, a handle and an outlet pipe, and the valve body is disposed between the handle and the outlet pipe； The control mechanism comprises a water flower regulating seat, a water inlet adjusting seat and a lever, the water flower regulating seat and the water inlet adjusting seat are respectively arranged in the valve body, and the two ends of the lever are respectively connected with the water flower regulating seat and the water inlet adjusting seat, and the lever is used for synchronization. The water flower control seat and the water inlet adjustment seat are rotated, thereby simultaneously adjusting the opening and closing range of the water flower, controlling the opening and closing of the water inlet and the flow rate state.本創作係提供一種單手操作之噴水器，其所欲解決之問題點，針對習知噴水槍所存在之使用者必須同時透過雙手操控噴水槍其操作不甚便利等狀況，造成使用者作業不便之問題點加以改良突破；所述單手操作之噴水器其包括：主體包括握柄、出水管及閥體，握柄及出水管，而閥體設置於握柄與出水管之間；以及控制機構包括水花調控座、進水調節座及撥桿，水花調控座及進水調節座分別組設於閥體內，撥桿兩端分別與水花調控座及進水調節座連接，撥桿供同步帶動水花調控座及進水調節座旋轉，進而同時調整水花開合幅度、控制進水之啟閉及流量大小狀態。
