Abstract: Because of non-renewable resources,limited restrictions,the use of renewable resources in the preparation of activated carbon is receiving increasing attention.Conditions because of the restrictions,the majority of biomass burning by -products should not be utilized to the fullest and cause environmental pollution.Could make full use of this part of the material made of activated carbon can not only reduce its impact on the environment,but also able to re-use of waste resources,but will have enormous economic and social benefits.This paper introduces the preparation of several active agents for activated carbon and its principles,at the same time to explore a variety of active agents Preparation of the yield of activated carbon and activated carbon on the performance of each product were measured in order to select a more appropriate activating agent.