The invention relates to an angle-adjustable bracket provided with a base capable of being fixed on a wall and a suspension arm capable of swinging. In order to perform angle adjustment stage by stage, the invention provides a locking mechanism provided with an arc-shaped long hole about of a swinging axis. The long hole has a round widened part connected via a narraow part. A bolt is inserted into the long hole. A hole plate is arranged as a positioned of the locking mechanism on the bolt rod of the bolt. With the positioned, stage-by stage angle adjustment on the suspension can be performed when the hole plate is outside the widened part of the long hole and the angle position of the suspension arm can be determined when the hole plate is in the congruent widened part of the long hole. An external adjusting bolt can be used for stageless angle adjustment.