The disclosure provides a skin detection method and an image processing device. The method includes: retrieving a human face image； retrieving a mask according to a detection item and defining a detection region in the human face image based on the mask； transforming the human face image into channel images； finding out a skin feature corresponding to in the detection region of each channel image； calculating a reference score corresponding to the skin feature of the detection item in each channel image； calculating a detection score of the human face image at the detection item according to the skin feature of the detection item； calculating a calibrated score corresponding to the detection item according to historical detection scores and the detection score.本發明提供一種皮膚檢測方法及影像處理裝置。所述方法包括：取得人臉影像；依據檢測項目取得遮罩，並基於遮罩在人臉影像中定義檢測區域；將人臉影像轉換為多個通道影像；在各通道影像的檢測區域中找出對應於檢測項目的皮膚特徵；計算各通道影像中檢測項目的皮膚特徵對應的參考分數；依據檢測項目的皮膚特徵對應的參考分數計算人臉影像在檢測項目的檢測分數；依據多個歷史檢測分數及檢測分數計算對應於檢測項目的校正後分數。
