The present invention provides an automatic crop irrigation system suitable for crop cultivation and irrigation, which comprises a water supply unit for providing water source for crop irrigation a detection unit for detecting at least one environment index of the cultivation environment and a control unit for controlling the water supply unit according to the at least one environment index. The present invention employs the detection unit to detect the environment index for automatically supplying appropriate irrigation water amount and water temperature, so as to enhance the convenience of crop cultivation.一種作物自動灌溉系統,此系統適用於作物栽種灌溉,包括一供水單元以提供水源供灌溉作物,一偵測單元係偵測植栽環境之至少一環境指數,一控制單元依據至少一環境指數以控制供水單元。110‧‧‧濕度計120‧‧‧溫度計130‧‧‧排氣設備140‧‧‧水壓壓力計150A‧‧‧進水水塔150B‧‧‧出水水塔160‧‧‧自動供水開關170‧‧‧水壓控制器180‧‧‧冰水機190‧‧‧水路管線200‧‧‧植栽容器320‧‧‧過濾設備
