A tobacco slice loosener disposed at a slice weighing outlet comprises a first picker roller and a second picker roller parallel to each other, the first picker roller and the second picker roller are respectively in transmission connection with a power device, conical loosening spikes are staggered on the cylindrical face of each of the first picker roller and the second picker roller, rotation speed of the first picker roller is larger than that of the second picker roller, the first picker roller is in transmission connection with a motor through a vee belt, the second picker roller is in transmission connection with a chain through a reducer, and the reducer is in transmission connection with the motor. The slice loosener is added to the slice weighing outlet, and caking and clotting of slice shreds during blending are eliminated by the function of loosening slice shreds of the loosener, so that the slice shreds are evenly and proportionally blended, full blending enables increase of inherent quality of the tobacco shreds, and taste of cigarettes is guaranteed.