Coal fines produced during coalbed methane drainage can harm production equipment and reduce reservoir permeability. This study analyzed coal fines from 16 wells in China's Ordos Basin to understand their characteristics. The concentration of coal fines ranged from 3-8%, with particle sizes mostly below 200 µm. The main components were vitrinite and inorganic minerals, with inorganic minerals making up over 50% on average. The shape of coal fines varied in different parts of the wells, with higher concentrations in thicker deformed coal layers and lower depths. Casing pressure and bottom hole pressure variations also influenced coal fines concentration.