The invention discloses a multifunctional wall-mounted air-conditioner hanger at least comprising two main supports. The main supports are matched with an air-conditioner frame to hang an air-conditioner. A telescopic connecting device is arranged between every two main supports, so that the distance between the two main supports can be adjusted according to needs of different air-conditioner frame to assist in assembling of the air-conditioner. As the telescopic connecting device is arranged between every two main supports which are used for hanging the air-conditioner, the distance between the two main supports can be adjusted according to requirements of different air-conditioner frames, the hanger is adaptable to multiple types of air-conditioners, and further, the universality of the hanger is improved, the design cost is reduced, large-scale production can be achieved by aid of modular design, and production efficiency is improved. Compared with the prior art, the hanger has the advantages of simple structure, convenience in manufacturing, high universality, low development and research cost, low manufacturing cost and adaptability to large-scale production.