A method of obtaining a fluorescent fundus image having following steps is provided, the steps include: receiving a to-be-detected color fundus image； obtaining a color feature of the to- be-detected color fundus image； encoding the color feature of the to- be-detected color fundus image according to a fundus image transformation model to transform the to-be-detected color fundus image into a to-be-detected fluorescent fundus image； and outputting the to-be-detected fluorescent fundus image.本發明的用以獲取螢光眼底圖的方法具有下列步驟：接收待測彩色眼底圖；獲取待測彩色眼底圖的彩圖特徵；依據眼底影像圖轉換模型編碼待測彩色眼底圖的彩圖特徵，以轉換待測彩色眼底圖為待測螢光眼底圖；以及輸出螢光眼底圖。
