Snake venom serum should refer to antivenom, common ones are antipit viper venom serum, antipodal viper venom serum, antivenom of silver ring snake, which can treat the corresponding snake bites. 1. Anti-viper venom serum: the main ingredient is horse anti-viper venom immunoglobulin digested by gastro-enzymes, usually used by injection, the main treatment for snake bites, for branded iron head snake bites and snake bites of the bamboo leaf green snake have a therapeutic effect, the patient should be injected as soon as possible after the bite, the sooner the better. Adverse reactions include anaphylactic shock, serum sickness. 2. Anti-five-step snake venom serum: the main component is the gastric enzyme digested horse anti-five-step snake venom immunoglobulin, usually used by injection, the main treatment of five-step snake bites, the sooner the injection the better, adverse reactions are also anaphylactic shock, serum sickness. 3. Anti-silver ring snake venom serum: the main ingredient is the gastric enzyme digested horse snake venom immunoglobulin, generally used by injection, the main treatment of silver ring snake bites, the earlier the injection the better, the adverse reactions include anaphylaxis, serum sickness. Antivenom are used with caution in patients with positive allergy tests. It is recommended that patients seek prompt medical attention after being bitten by a snake, and try to bring along photographs etc. that will help to identify the species of snake when seeking medical attention.