It can inhibit the release of acetylcholine from the presynaptic membrane of the peripheral motor nerve endings and cause muscle relaxation paralysis. It is used for adult patients such as blepharospasm, hemifacial spasm and all kinds of strabismus, especially acute paralytic strabismus, concomitant strabismus, endocrinomyopathy caused by strabismus and patients over 12 years old who cannot be surgically corrected or have poor surgical effect. Eyelid and facial muscle spasm: multi-point injection in upper and lower eyelid muscles, that is, a total of 4 or 5 points in the medial and lateral eyelid of the upper and lower eyelid or the subcutaneous orbicularis oculi muscle of the temporal side of the outer canthus, in addition to the above parts of the unilateral facial muscle spasm, three points need to be injected into the facial middle, lower and cheek muscles. Strabismus: Depending on the type and location of strabismus, different extraocular muscles were injected with coaxial electrode needles under surface anesthesia of 0.5% tetracaine and guided by an electromyography amplifier or electromyograph. Aminoglycoside antibiotics can enhance the action of this product, and aminoglycoside antibiotics are prohibited during the use of this product. It should be stored at -5 ~ -20℃.