n each roller. The steady-state tractive tensions were solved numerically, which of filter belts and rotational angular displacement of each roller and horizontal displacement of tensioner rollers. The slip factors were used to predict the onset of filter belts slipping on the rollers. The effects of the driving roller speed on the steady-state tractive tensions of filter belts were studied, and the effects of the preload of tensioner rollers and the driving roller speed on the steady-state slip factors were also analyzed. The rotational motion model of the drive system of belt filter press provide theoretical basis for further research. The belt slipping analysis were useful to the design of the drive system of belt filter press.