Mass concrete gravity dam is poured with large cabin，pouring speed，the thermal conductivity of concrete is poor，the hardening process will produce temperature stress.For typical dam sections in this paper，under the given condition of the construction progress，was analyzed through simulation analysis of temperature field and creep stress field during construction period，comprehensive evaluation of the temperature and stress results of the dam block was done，the calculation results can provide a useful reference for the temperature control design of the overflow dam section.