The mine floor boiler room provides services for the daily production of mines and the life of workers in mining enterprises. Due to the limitation of geographical location in the initial stage of construction and the lack of consideration, the ground boiler room of Chengzhuang Mine caused many problems such as poor operation of the boiler water supply system and poor safety of equipment running. By analyzing the installation design of the ground boiler room and supporting equipment and the on-site practical use, the reasonable design and modification of the gas steam boiler water supply system could effectively reduce the equipment input and daily maintenance costs, increase the available area of the boiler room, save the daily cost of  the mine and create favorable conditions for the standardization of the computer room.