Abstract: This paper briefly describes the originating mechanism for stress in fast burst reactor under pulsed operation.The formula,which transforms strain into stress,has been deduced based on a spherical shell model and according to this,the model of temperature correction for measured strain is put forward.The results of validation experiments on CFBR-II indicate that the requirements on instantaneous tempera-ture-rise measurement and synchronization can be avoided effectively by introducing the temperature correc-tion factor,and that the results of stress from measurement and calculation agrees well within about 25% er-ror range.