The proposal of the national carbon peak in 2030 and carbon neutral policy in 2060 will lead to a gradual increase in the proportion of new energy in the power industry.The instability of new energy power generation necessitates deep,rapid,and frequent peak regulation of power station boilers.The most crucial aspect of boiler peak regulation is adjusting the combustion condition.Therefore,this paper deeply explores furnace temperature measurement methods closely related to the combustion of power plant boilers,including water wall fire side,back side,and furnace section temperature measurement methods.Building on this foundation,a combustion safety evaluation method for power plant boilers is proposed from three aspects:component,maintenance,and operation safety.It is hoped that it can assit the power plant boiler safe peak operation.