The invention discloses a reverse construction method for an underground continuous wall. According to the construction method, the underground continuous wall is reversely constructed from top to bottom; the underground continuous wall is divided into many layers; excavation is performed on earthwork of a foundation pit layer by layer; and the underground continuous wall is constructed downwards layer by layer. The pipeline constraint problem caused in the construction process of the underground continuous wall around the foundation pit can be effectively avoided; the problem about the construction schedule is solved; construction management cost is saved; and the reverse construction method is used for the building construction field.