The industrial boiler is more important in the national economic production, in which the fixed discharge and continuous discharge of the boiler is an indispensable process to ensure the normal operation of the boiler. With the implementation of the fixed discharge and continuous discharge process, a lot of steam will be lost. In this paper, waste steam recovery equipment and automatic control system are used to recover waste heat from excess steam, and the recovered heat is used in production and life to avoid energy waste.