The invention discloses a special roller screen for urban garbage. The special roller screen for the urban garbage comprises a machine frame, an outer roller, an inner roller, an outer roller gearbox,an inner roller gearbox, a variable frequency motor, a controller, an outer roller fixing frame, an inner roller fixing frame, an inner roller fixing shaft, an outer roller fixing shaft, a water retaining shell, a wastewater recovery tank and a deodorization spraying device. The special roller screen for the urban garbage adopts a double-layer roller design so that the urban garbage can be screened and finely classified; traditional double-layer rollers need two or more motors to achieve different rotating speeds, the special roller screen for the urban garbage has the beneficial effects thatthe two rollers are driven to rotate at different speeds through one motor by utilizing the gearboxes, so that the garbage can be separated more thoroughly in the rolling and sorting process, and theproblems of blockage and the like caused by adhesion of the garbage can be solved; and special anticorrosive materials are coated, so that parts are prevented from being corroded.