Snake-bites are well-known medical emergencies in many parts of the world, especially in rural areas. Agricultural workers and children are the most affected. The incidence of snake-bite mortality is particularly high in South-East Asia. Rational use of snake anti-venom can substantially reduce mortality and morbidity due to snake bites. These Guidelines are a revised and updated version of similar guidelines published by the WHO Regional Office in South-East Asia in 1999. These guidelines aim to promote the rational management of snake-bite cases in various health facilities where trained health functionaries and quality snake antivenom are available.