Feeding roller reversing structure of silage maize harvester

The utility model provides a silage maize harvester feeding roller reverse rotation structure which comprises a shell, an output shaft, a transmission gear, a forward rotation input shaft and a reverse rotation input shaft are arranged in the shell, one end of the output shaft extends out of the shell and can be connected with a feeding roller, and an output gear is arranged on the output shaft. One end of the forward rotation input shaft is exposed out of the shell and can be connected with forward rotation driving equipment; one end of the reverse rotation input shaft is exposed out of the shell and can be connected with reverse rotation driving equipment, and a reverse rotation sliding gear is arranged on the reverse rotation input shaft; the output gear and the forward rotation input shaft are in transmission connection with the transmission gear, and the reverse rotation sliding gear can move in the axial direction of the reverse rotation input shaft to be engaged with or disengaged from the transmission