The utility model relates to a pan mill transmission organ of a two-lap lapping machine, comprising an upper pan mill and a lower pan mill arranged on the upper lather bed and the lower lather bed respectively, and a belt wheel. An electric motor A is arranged on the upper lather bed and a transducer is arranged on the electric motor A which clockwise rotates with the upper pan mill driven by the belt wheel of the pan mill. An electric motor B is arranged in the lower lather bed and also has a transducer. A horizontal shaft in the lower lather bed rotates driven by the lower belt wheel and drives the lower pan mill to anticlockwise rotate by the worm gear. The utility model adopts a structure that the two electric motors with a transducer respectively drive the upper pan mill and the lower pan mill to correspondingly rotate by the transmission organ to grind, and has the advantages of wide adjusting range of speed and good working stability, therefore can meet the speed requirements of grinding different materials and shapes.