The invention provides a differential dual-rotor crusher, which comprises a shell, a high-speed rotor system and a low-speed rotor system, wherein the high-speed rotor system and the low-speed rotor system are fixed inside the shell in a staggered mode; the high-speed rotor system comprises a hammer piece, a hammer piece shaft and a rapid rotor; and the low-speed rotor system comprises a spindle, a bearing block and a low-speed rotor. The differential dual-rotor crusher is reasonable in structure, the high-speed rotor system and the low-speed rotor system which are staggered are provided, the operating efficiency of the machine is improved, the friction resistance of the rotors is reduced, the operation of operators is convenient, the labor intensity is reduced, the personal safety of the operators is improved, the cost is saved, and large-scale popularization is promoted.