A novel spraying device for forestry operations comprises a base plate (1), a cylinder apparatus (2), a water tank apparatus (3), a support apparatus (4), a pushing apparatus (5), a frame body apparatus (6), a rotating apparatus (7), an elastic apparatus (8) and a motor apparatus (9) the base plate (1) is provided with a first supporting block (11) and a first rolling wheel (12) the cylinder apparatus (2) comprises a first cross plate (21), a first support (22), a first cylinder (23), a first pushing rod (24), a second pushing rod (25), a curved rod (26) and a first cross rod (27) the water tank apparatus (3) comprises a water tank (31), a second support (32), a first supporting rod (33), a first spring (34), a first partition plate (35), a second cross rod (36), a second spring (37), a first pipeline (38), a first filter sieve (39) and a first valve (30) the support apparatus (4) comprises a second supporting rod (41), a first oblique rod (42), a second oblique rod (43), a third support (44), a third cross rod (45), a positioning ring (46), a third spring (47) and a first positioning column (48) the pushing apparatus (5) comprises a second cylinder (51), a third pushing rod (52), a pushing plate (53) and a piston ring (54) the frame body apparatus (6) comprises a frame body (61), a collecting hopper (62), a second filter sieve (63) and a sealing ring (64). The spraying device is able to continuously adjust the spraying height, thereby performing spraying operations to plants of different heights.Linvention concerne un nouveau dispositif de pulvérisation, pour opérations forestières, qui comprend une plaque de base (1), un appareil de cylindre (2), un appareil de réservoir deau (3), un appareil de support (4), un appareil de poussée (5), un appareil de corps de cadre (6), un appareil de rotation (7), un appareil élastique (8) et un appareil de moteur (9) la plaque de base (1) est pourvue dun premier bloc de support (11) et dune première roue de roulement (12) lapp
