Abstract: Radiation technology is a new environmental pollution treatment technology，playing an important role in environmental protection. In this paper，the studies and applications of radiation technology in wastewater treatment are summarized，including the disinfection of wastewater as well as the removal of organic and inorganic compounds. The situation of radiation treatment device construction is also narrated in brief. Research progress and application prospect in combined technique of radiation technology with other wastewater treatment technologies are also discussed.