Abstract: In order to reduce the moisture content in fines of thermal coal,a new approache are explored based on the characteristics of moisture occurrence coal fines. The characteristics of moisture occurrence in low-rank coal were analyzed using Nuclear Mag-netic Resonance (LF-NMR) and Brunauer-Emmett-Teller (BET) techniques. An experimental setup for airflow-centrifugal field de-watering was developed to examine the effects and characteristics of the force field environment and airflow properties on the dewatering efficacy for coal fines, across different particle sizes and for pore water. The experimental result indicated that the feedstock possesses developed porosity, predominantly consisting of ink-bottle and slit-plate mesopores, with moisture chiefly located in meso and micropores, and a 33.95% share of moisture in macropores. A solitary centrifugal force field could reduce product moisture to 15.47%, and the extent of moisture reduction gradually de-creases with particle size diminishing, indicating superior dewatering performance for coarser parti-cles, primarily removing surface water and marginally reducing macropore water. In the scenario of synergistic dewatering with an airflow-centrifugal field, both surface water and 68.08% of macropore water were eliminated, reducinging the moisture content in coal fines to 13.08%. With particle size decreasing, the reduction extent of moisture content progressively increased, with sur-face water being thoroughly removed. The synergistic dewatering effect of the airflow-centrifugal field is pronounced, with airflow chiefly facilitating the removal of particle surface water and macropore water by opening and enlarging the dewatering pathways between material layers and through thermal effects.