Liquid Botulinum Injection is a prescription drug, which can only be injected under the supervision of doctors with prescription rights, and cannot be sold or injected in pharmacies or beauty salons. Before injection, beauty seekers should pay attention to check whether the plastic surgery institution has the medical institution's practice license and related hygiene license, and also check whether the beautician has the qualification of a licensed doctor or a licensed assistant doctor. In addition, the quality of botulinum toxin should be verified before injection to see if there is a clear manufacturer, production date and production batch number.