The invention provides a skin evaluation method and a skin care product or cosmetic recommendation method by the use of a laser speckle blood perfusion imaging instrument. The skin evaluation method comprises a shooting step, an imaging step, an area selection step and an evaluation step. In the shooting step, a video with specified time and showing surface blood signals of a cleaned face is shot. In the imaging step, all pixels, representing the blood signals, of the video are averaged so as to obtain face blood perfusion images. In the area selection step, blood vessel distribution parts different from other parts of the face are removed, and the residual parts are selected as evaluation zones. In the evaluation step, evaluations on blood perfusion amounts are carried out, and therefore the skin is evaluated. By employing the skin evaluation method, multiple different skin test indexes can be evaluated through a single apparatus, and therefore a test process is simplified and accelerated.