Abstract: The medical history was collected from11 cases in 3 accidents using "face to face" mode. These cases were examined using blood cell analysis, liver and renal function, immune function, endocrine function et al. The biological dose was estimated using the analysis of peripheralblood lymphocyte chromosome aberration, Gbanding and the micronucleus (CB). Thepsychological status of cases, before and after the treatment of radiation workers, was evaluated by application of Cattell sixteen personality factor Test (16PF), self rating depression scale (SDS) and self rating anxiety scale (SAS). Theresults showed that the worker exposed to ¹⁹²Ir was diagnosed with acute radiological skin injury degree II by GSH and has been largely improving after the local conservative treatment. The 4 cases of chronic radiation injuries were diagnosed as the object of observation, without biological dose estimated. There was a big psychological influence over the overexposed. The research also indicated that most of the accidents were caused by human error and the victims will represent appear aseries of psychological changes after the accident.

Key words: Radiation accident, Excess Exposure, Medical treatment, Mental health