Abstract: This paper presents the major results of a preliminary assessment on the radiological impact of China pilot HTR power plant. They include the calculation of inventory of radio-nuclides in the reactor core, release of radioactivity into the atmosphere during routine operation, source term of release and the resulting radiation dose in the event of an accident. The results of this assesment have shown that the radiation dose received by the general public as a result of radioactivity release under normal operation conditions will be far below the dose limit defined in national regulations. The potential exposure to the population in the event of design basis accidents will be significantly lower than the generic intervention levels for taking sheltering.