Currently clinical local injection of botulinum toxin is a common method for men to quickly slim down their face. 1. Local injection of botulinum toxin is currently a more commonly used medical cosmetic method. Botulinum toxin can cause blockage of the facial nerve, leading to muscle atrophy, so as to achieve the purpose of face slimming. 2. Using the method of injecting botulinum toxin to achieve the effect of face slimming, generally need a few weeks after the injection to be able to reflect, and the maintenance time is shorter, generally in about 12 ~ 18 months need to repeat the injection. The cosmetic effect and safety of face slimming injections are directly related to the skillfulness of the technology, and it is recommended that patients must choose regular medical institutions and have this operation performed by professional doctors.