The invention discloses a field agricultural machine driving device. The field agricultural machine driving device includes winches positioned at two sides of a field; a driving frame is arranged the two winches; the driving frame includes a rack (1) which is formed by welding profile bars mutually; a linkage support (2) is each arranged two sides of the rack (1); a screw rod (3) which is in rotation connection fit with the linkage support is arranged in each linkage support (2); one end of each screw rod (3) passes through the linkage support (2) and then is connected to a power output shaft end of a driving motor; and the driving motors are arranged in motor cases (4). The field agricultural machine driving device is simple in structure, is easy to use, can drive a relevant sowing device without an agricultural machine during a whole operation process; the dead weight of the sowing device is light, which can effectively prevent land from hardening in comparison with agricultural tractors; and the driving frame can freely turn during walking in the field.