Abstract: Low operating efficiency and high energy consumption in coal-burning hot water boiler are serious defects in Weifang Oil Pumping Station.Influence of excess air coefficient and air leak, air distribution of arch and fire grate, clogging and furnace draft on heat efficiency, output and operating reliability of the boiler are analyzed.Problems to be focused on in operation of the boil are proposed.Based on relevancy of the common problems with heat loss, several energy saving measures for the boiler are put forward.