present invention relates to the automatic watering system as, and more particularly at the beginning of rainfall and stored rainwater in the rainwater reservoir and irrigation control to each of the pots installed in the rain when the rain detection signal detected in the exit portion is inputted to the control unit which is designated period of time after the guard rail greenery rainwater from rainwater storage section every predetermined period , pollen is installed, and create a variety of possible changes to the urban landscape, the present invention relates to a soluble automatic watering system for reducing runoff and the urban landscape composition for reducing nonpoint pollution of the road. Accordingly, the present invention reduces the runoff and the urban landscape melt compositions automatic irrigation system is being installed for the proposed landfill on the roadside in the border area of the driveway and sidewalks, rainwater flowing into the inlet pipe is formed on one side and the other side flows in transfer in accordance with the rainwater reservoir water level was provided with a buryeokjae to be rich in rain water pooled in the rainwater reservoir and the upper and downward moving and conveying the rainwater reservoir rainwater reservoir outflow pipe being formed to drain rainwater Pumps is connected to the feed pump and the irrigation means and installed on the boundary of the driveway and sidewalks and greenery planting vegetation to guard rail and having a potted plant to signal whether the watering of plants and vegetation in the greenery guardrail installed on the ground and rainfall detecting unit for detecting whether or not the rainfall and a controller for applying a control signal to the transfer pump in accordance with a signal inputted from the rainfall detecting unit comprises a본 발명은 자동 관수 시스템에 관한 것으로서, 더욱 상세하게는 강우 시작시 빗물저류부에 빗물을 저장하였다가 강우감지부에서 강우종료 감지신호가 제어부에 입력되면 지정기간이 경과한 후 일정주기마다 빗물저류부에서 빗물을 녹지가드레일에 설치된 각각의 화분으로 관수하도록 제어하고, 설치된