The present invention relates to a fertilizer allocation system and fertilizer allocation method. The fertilizer allocation system includes a sprayer, a plurality of solution tanks, a camera, a processor, data storage unit and a controller. The sprayer connects to solution tanks by a flow switch and spray fertilizer, which in solution tanks to crop. The camera takes a picture of crop and the processor compared the picture with a plurality of identification data stored on the data storage unit, then judges a growing situation of crop and generates an allocation message. The controller receives the allocation message and adjust the flow switch to change the flow of fertilizer so that crop get desired element.本發明係一種肥料調配系統及肥料調配方法，肥料調配系統包括一噴灑器、複數個養液槽、一攝像機、一處理器、一資料儲存單元及一控制器，每一養液槽透過流量開關連接至噴灑器，以使噴灑器將養液槽內之肥料噴灑至作物上；該攝像機用以擷取作物之一作物影像，該處理器用以將擷取到之作物影像與該資料儲存單元內之複數筆辨識資料相比對，以判斷作物之生長情況，並產生一調配訊息；該控制器用以接收調配訊息，再根據該調配訊息驅動各流量開關，以調整各養液槽內之肥料輸入至噴灑器中之流量，進而補充作物所缺乏之肥料元素。
