The invention relates to a dry type mortar material for dwelling house architectural decoration and a method for preparing the same, in particular to a technical method in which river sand and clean sand are taken as aggregate, cement is taken as a main material, white limestone powder, an anti-mildew agent, an eliminating smell agent and the like are taken as auxiliary materials, and the mixing materials with different types are formed by adopting different mix proportions according to specific requirements on different decorative construction contents of dwelling house buildings; and by utilizing general technical equipment and adopting processes of drying, screening, mix-stirring, weighing, bagging, seaming and the like, the mortar material integrates various architectural ornamentation raw and auxiliary materials into a whole, facilitates the selection of users as well as storage and transportation; and in the construction field, the mortar material can be directly used only by mixing water, and no waste treatment is needed, so that the mortar material is suitable for needs of different decorative construction contents of the dwelling house buildings in large or medium-sized cities, such as division wall rebuilding and masonry, wall surface flattening and plastering, ground flattening, wall surface or ground pasting.