In natural gas treatment, low pressure steam is usually used to provide heating for most of process systems and boiler room is an important part of natural gas treatment plant. With continuous increase of natural gas treatment scale and capacity, boiler heating load becomes large gradually. In view of problems occurring in trial operation stage of boiler heating system in a certain natural gas treatment plant, combined with boiler load testing, analyzed are causes of carryoery probably resulting from various factors in boiler body design, construction and operation and proposed is the improvement scheme through considering feasible construction measures at the site, which can provide an effective solution for carryoery industrial heating boiler operation.