The invention discloses a digital intelligent scale-removing device, belonging to the technical field of scale prevention and removal of liquid flow flowing through a heated surface in water treatment. The device is connected with a water inlet end pipeline of a water circulating system by a flange, the outer part thereof adopts stainless steel pipes as a skeleton and the inner part thereof is made into a lattice by special alloy plates and is arranged in stainless steel pipe cavities; a nano generating layer is coated or melted on the special alloy plates which are connected by welding or mechanical matching and are connected with the stainless steel pipes by welding or mechanical matching. The device generates active ions, utilizes the active ions to activate scaling factors to disturb the scaling process and achieve the purposes of preventing scale and removing scale, and can be used for scale prevention and removal of devices of heat exchangers, water cooling walls, cooling and condensing equipment, hot water boilers and the like.