Abstract: Safe treatment and disposal of high level liquid radioactive waste （HLLW） is an important topic. The HLLW calcination technology method is normally used to decrease the production of high level radioactive waste and reduce the risk of its disposal. This paper analyzed and discussed the calcination mechanism, research status and the advantages and disadvantages of several HLLW calcination technology methods, including pot calcination, spray calcination, fluidizedbed calcination, and rotary kiln calcination.