The invention belongs to the field of treatment of nickel-containing metal wastewater, and particularly provides a nickel-containing wastewater treatment tower. The tower comprises a plurality of reaction columns, the reaction columns are connected with each other by a pipeline and a valve, the reaction columns are vertically disposed, inner cavities are provided with water outlet zones, reactionzones and water distribution zones from top to bottom in sequence, water outlets communicated with the reaction columns are formed in positions, corresponding to the water outlet zones, of the reaction columns, the reaction zones are filled with chelating resins, the water distribution zones are provided with water distributors, water inlets communicated with the water distributors are formed in the reaction columns, and the nickel-containing wastewater is uniformly distributed in the reaction columns. The nickel-containing wastewater treatment tower is an important device on a novel metal ion-containing wastewater treatment line, has a simple structure and small volume, can make the overall structure of a wastewater treatment device compact, and is directly installed around a production line of producing the wastewater, thereby achieving an online circulation mode. A multi-use mode can achieve the simultaneous operation and maintenance of equipment without stopping the operation for processing, thereby improving the production efficiency.