In the article, separate stages of the evolution of the cupboard («mysnyk») in the Polissia dwelling are considered. It was established that at first its functions were performed by a system structurally connected with a log-house «hriad» (decks or beams), which were gradually transformed into «hriady»-shelfs. The shelves placed on the threshold and facial walls were one of the oldest, and the initial stage of the genesis of «myshynyk», which later took their place, is connected with them. At Polissia two types of «myshynyk» has been developed: stationary – structurally associated with a log-house or «lava» (older), and mobile, mostly hinged (of a new origin).