Supplementary climbing device that ladders used

The utility model relates to a ladders auxiliary device, in particular to supplementary climbing device that ladders used, it includes an at least support arm, the support arm upper segment is linkagesegment, support arm hypomere for extending the section for the section of hanging, support arm middle section, the section of hanging is provided with the friction element who is used for strengthening area of contact, the linkage segment is provided with at least one coupling assembling who is used for connecting ladders, it is provided with the loose pulley assembly that the ladders of being convenient for removed to extend the section. Support arm and ladders pass through coupling assembling locking, when ladders need remove, support the loose pulley assembly of support arm hypomere and lean on on the wall body frictional force between loose pulley assembly reduction ladders and the wall body to reach the laborsaving and convenient purpose that removes, when ladders need fix, rely onladders on the wall body,