The invention discloses an external
scaffold monitoring device and a monitoring method thereof, and the device comprises an attached rod
assembly which is detachably installed on a rod piece of an external
scaffold, and the outer side of the attached rod
assembly is provided with two lug plates which are oppositely arranged; one end of the
laser indicator is hinged to the outer side of the attached rod
assembly through a hinge shaft and arranged between the two lug plates, arc-shaped holes are formed in the lug plates, the arc-shaped holes and the hinge shaft are concentrically arranged, sliding rods are formed on the two opposite sides of the
laser indicator, the sliding rods are arranged in the arc-shaped holes in a sliding mode, and locking pieces are installed on the sliding rods in a position-adjustable mode; the locking piece abuts against the outer side of the lug plate, and anti-skid lines are formed on the outer side of the locking piece and the outer side of the lug plate respectively. The target spot is arranged on the ground on the outer side of the outer
scaffold, and the
laser indicator is aligned to the target spot. The method solves the problem that the existing method for monitoring the deformation and settlement of the external scaffold by adopting instruments such as a
theodolite and the like is relatively tedious in monitoring.