The invention provides a skin detection device using different detecting lights, such as white light or UV light. When white light is used, the user's original skin image is acquired, and further analyzed to determine the user's skin condition, such as pore size or dullness of spots. When UV light is used, it is determined whether there is metal remnant or acne on the user's skin. By using the skin detection device, various user skin conditions can be found to help the following cosmetic consultation.
