The invention provides a water-cooling movable smoke hood. The water-cooling movable smoke hood comprises an upper part smoke hood and a lower part smoke hood, the upper part smoke hood and the lower part smoke hood respectively comprise a plurality of annular water cooling pipes which are laminated together, a water inlet pipe and a water outlet pipe, the annular water cooling pipe is communicated with the water inlet pipe by virtue of a water inlet branch pipe and is communicated with the water outlet pipe by virtue of a water outlet branch pipe, a plurality of annular water cooling pipes of the upper part smoke hood and a plurality of annular water cooling pipes of the lower part smoke hood form a straight barrel shaped or cone shaped structure which is open up and down. By adopting the technical scheme of the invention, the water cooling movable smoke hood is divided into the upper part smoke hood and the lower part smoke hood, the upper part smoke is heavily woven after being used for a period of time, and only the upper part smoke is required to be replaced in short-term maintenance. Thus, the water cooling movable smoke hood of the invention can reduce work load of maintenance, save maintenance time and improve the efficiency of converter.