The face slimming injection is Botox, by blocking the muscles and nerves, causing muscle atrophy, so as to achieve a thin face effect. But the injection of botulinum toxin, need to be operated by professional and experienced doctors, otherwise it will lead to the following adverse consequences: 1, facial depression: more than due to the injection point of the slimming needle position slightly on the bite muscle atrophy, the articulation of the transition in the face depression, most patients have this symptom before the injection, just not paid attention to, to be aggravated by the symptoms only to find; 2, facial sagging: some older or loose skin patients Injecting the face slimming needle, the slimming effect is obvious, there may also be a problem of facial support, which leads to the sagging appearance of loose skin; 3, smile stiffness: when injecting the face slimming needle, the needle point upwards more than the safety line or forward more than the anatomical boundary line of the bite muscle, botulinum toxin acts on the smile muscle or other perioral expression muscles, which leads to this phenomenon; 4, frog cheek deformity: after injecting botulinum toxin into the bite muscle, not The effect of face slimming does not appear, but a bulging appearance in the bite muscle area, resembling a frog’s gills; 5, botulinum toxin poisoning: some irregular botulinum toxin, the concentration and potency of the toxin cannot be determined, coupled with the irregular injection operation, may cause the patient to have headache, dizziness, general weakness and difficulty in limb movement, breathing difficulties and other symptoms. Therefore, if botulinum toxin injection is needed, candidates should choose a regular and suitable medical institution and qualified doctors to minimize the risk.