The invention relates to the technical field of garment making and discloses an interactive promotion method and device for cheongsam. The interactive promotion method for the cheongsam comprises steps as follows: when a human body is detected, a first cheongsampropaganda video is played and contains N cheongsam styles, and N is a natural number larger than or equal to 1; trigger operation of a user is detected in a playing process of the first cheongsampropaganda video, and a first cheongsam style is output according to the detected trigger operation and belongs to the N cheongsam styles in the first cheongsampropaganda video; a corresponding second cheongsampropaganda video is found out according to the first cheongsam style and is played. Compared with the prior art, the implementation mode has the advantages as follows: interactive promotion of the cheongsam is realized, the trigger operation of the user is integrated in the propaganda process, propaganda content of cheongsam in special styles is known according to the selection of the user, so that theway of promotion is more flexible, and actual demands of the user are met.