The invention belongs to the technical field of indoor decoration, and discloses an indoor decoration and design system based on an AR (Augmented Reality) virtual reality technology. The indoor decoration and design system based on the AR virtual reality technology comprises an image collection module, an image analysis module, a style selection module, a data processing module, a storage module,a three-dimensional graph generation module, a modularized editing module and an AR presenting module. By use of the system, an interaction module and a three-dimensional model can move according to the fingerprint displacement of a user, an interaction way of displaying a 3d model image and the user is enriched, in addition, interaction operation is simple, and operation usability is increased. Meanwhile, by use of the system, through the AR presenting module, the virtual reality technology is adopted to carry out vivid and realistic advanced design and display on an indoor decoration style,so that the user can obtain a true indoor living feeling in advance, and meanwhile, further improvement can be carried out in a decoration process.