The invention relates to an angle adjustment device for a combustor. The angle adjustment device is characterized in that the combustor (1) is connected with the outer wall of a rotary device (4) through a universal joint (2); a stepped hole (42) of the rotary device (4) is internally provided with a thrust bearing (43), a large joint bearing (44), a small joint bearing (45) and a rotary bearing shaft (46) in sequence fittingly from top to bottom. The upper end of the rotary bearing shaft (46) extends out of the stepped hole (42) and is fixed to the bottom of a melting furnace steel frame (5).The tail portion of the combustor (1) is connected with an inclination angle adjusting pull rod (6), and the inclination angle adjusting pull rod (6) is connected with the outer wall of the rotary device (4) through a second connection rod (7). One end of a swing angle adjusting pull rod (8) is connected with the rotary device (4) through the second connection rod (7) while the other end is connected with the melting furnace steel frame (5) through a pull rod fixing seat (9). The angle adjustment device has advantages of flexibility in angle adjustment of the combustor, relief of labor intensity of workers and reduction of maintenance cost.