To provide an excellent sprinkler system capable of setting a sprinkling area to freely match with the shape of the land desired to be sprinkled and sprinkling water though a conventional sprinkler system mainly sprinles water in a circular or fan shape and can not sprinkle water on the land having a deformed or polygonal shape.

The sprinkling area is easily set and efficient sprinkling is expected by mounting a jetting control panel (5) after a jet nozzle (6) and changing guide plates (3) nearly similar to the shape of the land desired to be sprinkled.