The utility model relates to the field of wood processing machinery, in particular to a peeling machine. A first chain wheel (4) is connected with a second chain wheel (6) through a first chain wheel (5), the second chain wheel (6) is connected with a second bearing (8) in a second bearing seat (7), a rotation shaft (9) is arranged in the second bearing (8), a third chain wheel (10) is arranged at one end of the rotation shaft (9), a second chain (11) is arranged on the third chain wheel (10), the rotation shaft (9) is connected with a speed reducer (12), a coupling (13) is arranged between the speed reducer (12) and a motor (14), a driving roll (15) is arranged at one end of a main roller (1), and the driving roll (15) is connected with a second motor (16). The peeling machine is simple in structure, is thorough in peeling, can discharge tree bark automatically, can discharge wood automatically, and is reliable in operation, convenient to repair, long in service life, free of particular requirement for the size and straightness of trees, wide in use scope, and capable of preventing shredded chips from ejecting into equipment to cause damage.