The utility model discloses a trilobed wheel straw fiber processing equipment, which comprises a bracket, the main shaft, the material processing chamber, the the first impeller axle, second impeller shaft and third impeller shaft, central belt pulley and motor are installed to the support top, the main shaft passes support and central belt pulley, the main shaft links firmly with the material processing chamber, install big belt pulley on the main shaft, install the belt lace wheel on the motor output shaft, the belt lace wheel is connected through first belt with big belt pulley, the the first impeller axle, the equal passing through of second impeller shaft and third and impeller shaft is in material processing chamber bottom, all install impeller and planet band pulley on three impeller shafts, the center belt pulley passes through the second belt with the epaxial planet band pulley of the first impeller and is connected, the center belt pulley passes through the third belt with the epaxial planet band pulley of second impeller and is connected, the center belt pulley passes through the fourth belt with the epaxial planet band pulley of third impeller and is connected. The utility model discloses can be processed into the bituminous paving reinforcing with the straw and describe the fibre with the filament, can process straw fiber on a large scale.