The invention discloses a movable intelligent phase-change heat storing and supplying device. The device comprises an upper box body and a lower box body, wherein a steam heating pipe set and a cold water cooling pipe set are arranged in the upper box body; a phase-change heat storing assembly is arranged in the lower box body, comprising phase-change heat storing pipes stored with the phase-change materials, and a pipe plate, wherein the phase-change heat storing pipes are soaked in distilled water and horizontally staggered in rows; a distilled water circulating pipeline is arranged at the outer part of the box body. The device is compact and reasonable in structure, small in pipe bundle vibration, and small in heat storing and radiating time; the distilled water is used as a medium heat exchange medium, so that a scaling area can be greatly reduced, and the cleaning is convenient.