Recently, we have seen a lot of advertisements for “cosmetic crowns” in different media, and patients have come to ask about them, so I need to explain. The advertisements say “7 days to correct adult malocclusion, pigmented teeth, painless, minimally invasive” and so on, which professionals believe are misleading to the public. The so-called “crown” is actually the use of conventional means of restorative dentistry, that is, all-porcelain or porcelain crowns to achieve the effect of dental aesthetics. The doctor needs to use aesthetic knowledge for pre-prosthetic evaluation, design, if necessary, with endodontic, periodontal, orthodontic specialist treatment, and then according to the design requirements of the standardized dental preparation (grinding), take the mold, by the denture processing plant production, and finally sent back to the doctor to the patient to wear and bonding and other processes. It is true that restorative methods can change the color of the affected teeth (such as tetracycline, fluorosis, dead pulp teeth, etc.), repair gaps, correct mild misalignment, etc., but this must be done step by step by a doctor with specialized skills in restorative dentistry, which involves not only aesthetic knowledge, but also dental, endodontic, periodontal, restorative, orthodontic and other dental specialty knowledge, and is not a simple cosmetic project. It is recommended that people with cosmetic dental needs see ads like “beauty crown”, do not get hot-headed and think it is some new cosmetic project and fall into it, and then it is not good to lose.