Rosacea and common acne, although the name of the disease have acne, but they are very different diseases.1, acne: is a common inflammatory disease of the sebaceous glands of the hair follicles, the clinical manifestations of black and whiteheads of acne, inflammatory pimples, pustules, nodules, cysts, etc. The cause and the body hormone level abnormalities, the ducts of the sebaceous glands of the hair follicles are blocked, the Propionibacterium acnes infection, inflammatory factors. Its cause and body hormone level abnormality, follicle sebaceous gland conduit blockage, Propionibacterium acnes infection, inflammatory factors have a certain relationship. 2, rosacea: in fact, the old people originally also called rosacea, the main manifestation of the face paroxysmal or persistent redness, part of the inflammatory papule, pustules, accompanied by burning, dry itching discomfort, etc. The cause is still not clear. Its cause is still not clear, considering and inflammatory factors, capillary or vascular hyperreactivity, physical fitness has a certain relationship, so the two are very different.