It is best not to undergo sterilization surgery for cats allergic to anesthesia. You can feed the cat an appropriate amount of anti-estrus powder when it is in heat, and you can also play with toys with the cat to distract the cat. If a cat is allergic to anesthesia and undergoes sterilization surgery, it can easily lead to death from suffocation and make it difficult to wake up. The risk is very high, so it is not recommended for cats allergic to anesthesia to undergo sterilization.