The strong fouling and slagging characteristics of Xinjiang Zhundong coal restrict and affect the safe and stable operation of boilers seriously. The coating technology utilized in the heating surface of boilers is one of the effective ways to reduce the contamination of the heating surface of Zhundong coal. The effects of flue gas temperature and coating materials on the heat transfer and fouling characteristics of the heating surface in a one-dimension furnace were investigated. The results show that the coating can reduce the contamination rate of the heating surface and debase the fouling resistance coefficient. Under the experimental conditions, compared with the un-coated tube at 750℃, contamination factors of the coated tube A and B descend by 19.6% and 7.1% respectively; and those at 850℃ are 24.73% and 10.22%; at 950℃ are 21.84% and 34.29%.Through the analysis on the test of ash contamination layer, coating materials have no obvious effect on the contamination layer components. It is shown that the coating technology for retarding fouling contamination is based on the physical action.