A kind of impact type sprinkler adjust automatically angle of water structure, wherein impact type sprinkler system includes the pedestal of an installing what water source end, the holder on an installing what pedestal, the adjustment ring on an installing what holder； And this creation adjust automatically angle of water structure, it is to include a coaxial installing what pedestal and be connected to the connectivity structure at water source and one set water flowing out structure on what connectivity structure using mandrel structure and with watertight means group. The adjustment ring system can change the relief height of its top surface with respect to what holder, and the water flowing out structure system is installed with a top bracing member, the top surface of the free end system contact what adjustment ring of the top bracing member, therefore when water flowing out structure water outlet, when beat changes horizontal spray angle due to the effect of impact produced by itself structure, the top bracing member can change simultaneously the vertical spray angle of water flowing out structure, and then the automatic sprinkler irrigation effect for reaching large area according to the surface undulation state of adjustment ring.一種撞擊式灑水器自動調整出水角度結構，其中撞擊式灑水器係包含一裝設於水源末端之底座、一裝設於底座上之承置座、一裝設於承置座上之調整環；而本創作所述自動調整出水角度結構，係包含有一同軸裝設於底座並連通水源之連通結構以及一利用心軸結構而以水密方式組設於連通結構上之出水結構。該調整環係可相對於承置座改變其頂面之起伏高度，且該出水結構係固設有一頂撐件，該頂撐件之自由端部係頂抵於調整環之頂面，因此當出水結構出水時，因其本身結構所產生之撞擊作用而偏擺改變水平噴灑角度時，該頂撐件會依調整環之表面起伏狀態，同時改變出水結構之垂直噴灑角度，進而自動達大面積之噴灑灌溉效果。
