Abstract: Self-propelled machine for wrapping stacked loads with protective film which unwinds from a reel, comprising an elevator system (2) for vertical movement of reel (11), and a mobile supporting carriage (4) said machine, according to the invention, it comprises:—two driving wheels (40, 41) arranged on the same axis, each driven by its own independent motor (42, 43); and—an automatic guidance system (5) with a contact device (50) adapted to follow a contact surface (32) of the stacked load (31) and to detect its distance from the machine, and a servocontrol (51) which is responsive to the distance detected by said contact device (50), adapted to control said driving motors of the machine in such a way that the machine contact surface (32).