Handheld forestry tree paint spraying device

The utility model relates to the technical field of forestry tree insect pest prevention equipment, and discloses a handheld forestry tree paint spraying device which comprises a main arm, the outer side wall of the main arm is sleeved with a driving handle, the upper portion of the main arm is in threaded connection with a cube tee joint, and a half-moon-shaped main body is installed on the upper portion of the interior of the cube tee joint. The half-moon-shaped main body comprises a half-moon-shaped main body A and a half-moon-shaped main body B, the half-moon-shaped main body A is located on the left side of the upper portion of the cubic tee joint, the half-moon-shaped main body A is rotationally connected with the cubic tee joint through a rotating shaft, and the half-moon-shaped main body B is located on the right side of the upper portion of the cubic tee joint; according to the tree whitewashing machine, the wide-angle fan-shaped nozzles spray whitewashing agents on the surfaces, gaps and holes of tr