The invention discloses an attached lifting climbing frame design method and system based on a BIM technology and a storage medium. Based on software implementation capable of achieving the BIM technology after secondary development, the method comprises the steps that a building model establishing step that an imported drawing related to a building and subjected to preprocessing is obtained, theelevation is read, and three-dimensional expansion is conducted on the drawing based on the read elevation to obtain a building model; a climbing frame plane model creating step that, a climbing framemounting position is readed in the drawing, two-dimensional parameters and three-dimensional parameters are acquired related to climbing frame mounting and set by a user, materials of related structures related to climbing frames are called from a material library according to the selection of the user, and the called materials are placed at the climbing frame mounting position according to the requirements of the two-dimensional parameters to construct a climbing frame plane model; and a climbing frame three-dimensional model creation step that according to the three-dimensional parameters,three-dimensional expansion is carried out on the climbing frame plane model to obtain a climbing frame three-dimensional model, so that the design of the climbing frame is more efficient, and a three-dimensional effect picture of practical application of the climbing frame can be obtained in advance.