The utility model relates to a wall-climbing ruler and a breast cancer postoperative multifunctional exercising device, the wall-climbing ruler comprises a ruler body and climbing strips, the climbingstrips are arranged on the ruler body at certain intervals, each climbing strip comprises an inclined surface which is inclined downwards, and a plurality of finger sleeves capable of accommodating fingers are arranged on the inclined surface. The multifunctional exercising device comprises the wall climbing ruler and a frame body used for fixing the wall climbing ruler, the frame body comprisesan upper frame and a lower frame, a first exercising assembly is arranged on the upper frame, and a second exercising assembly and a third exercising assembly are arranged on the lower frame. A patient does not feel tired easily when climbing the wall for a short time, the exercising recovery effect is good, exercising can be conducted in the whole recovery process, and multiple purposes are achieved through one machine.