According to one embodiment, there is provided an anti-vibration structure for an operation lever of a portable brush cutter (3), in which a lever device (4) includes: a main body (4a) through which a pole (2) is inserted in an axial direction, the main body (4a) including protrusions (14) protruding from both ends in the axial direction support members (13a, 13b) provided on the pole (2) to support the both ends of the main body (4a) such that the main body (4a) is separated from the pole (2), each support member (13a, 13b) including a recess (24) and anti-vibration materials (12) accommodated in the recesses (24) of the support members (13a, 13b) so as to be sandwiched between the support members (13a, 13b) and the main body (4a) in the axial direction, respectively, each anti-vibration material (12) including a groove (17) to which a respective one of the protrusions of the main body (4a) is inserted.
