The invention relates to a sprinkler system capable of automatically detecting temperature and humidity to adjust sprinkling distance, which includes a plurality of temperature and humidity detectors disposed in soil within a sprinkling range for transmitting a sprinkling signal when detecting that the humidity of the soil does not reach a humidity standard value and the temperature is not higher than a temperature standard value； a control unit for receiving the sprinkling signal to calculate a water shortage range and send a speed change signal according to the water shortage range； and an inverter motor for receiving the speed change signal to control and start the inverter motor with different rotational speed so as to generate different delivery water pressure； and at least one sprinkler for performing sprinkling to the soil of different region size within the sprinkling range according to the delivery water pressure outputted by the inverter motor, so as to reduce the amount of installed sprinklers, thereby achieving the efficacies of cost reduction and manpower saving.本發明關於一種自動偵測溫濕度調整灑水距離之灑水系統，包含有複數溫濕度偵測器設於一灑水範圍內的土壤中，藉以偵測該土壤的濕度未達到一濕度標準值，及溫度未高於一溫度標準值時，則傳送出一灑水訊號；一控制單元接收該灑水訊號，而運算出一缺水範圍，根據缺水範圍發出一變速訊號；一變頻馬達接收該變速訊號，控制該變頻馬達啟動不同轉速，產生不同的輸送水壓；至少一灑水器根據該變頻馬達輸出不同的該輸送水壓，而對於該灑水範圍內不同區域大小的該土壤進行灑水。藉以可減少安裝灑水器的數量，而達到降低成本及節省人力之功效。
