People with square faces or more fat in the face and more developed facial muscles may feel that their faces are bigger and want to slim them down. If it is caused by obesity, it is better to mainly reduce weight or rely on fine facial precision liposuction surgery. However, if it belongs to the more developed bite muscle, you can apply botulinum toxin to block muscle movement and achieve muscle disuse atrophy to achieve the purpose of face slimming, that is, face slimming injection, but the operation requires extensive clinical experience, otherwise it is easy to injure the parotid gland and facial nerve. If the dosage and site is not grasped well, it is easy to cause the face muscles to be particularly stiff or affect the function of the entire facial muscles, which is very inappropriate. If the facial shape is bony and bad, plastic surgery has corresponding bone amputation surgery available. Therefore, before doing each treatment, it is important to evaluate each treatment advantage and disadvantage very well, and safety should be put in the first place. Plastic surgery requires a very high level of clinical experience and fine operation, and patients are advised to go to regular hospitals for aesthetic plastic surgery type treatment.