The invention discloses a method for removing estrogen from water by utilizing a carbon-based magnetic iron-cobalt bimetal material to activate peroxymonosulfate, belonging to the field of chemical treatment of polluted wastewater. The objective of the invention is to solve defect problems like high cost, poor removal effect and complicated process of a conventional method for removing the estrogen from the water. The method comprises the following steps: 1, mixing of sodium peroxymonosulfate and pretreated water; 2, adjustment of a reaction pH value; 3, preparation of the carbon-based magnetic iron-cobalt bimetal material; 4, addition of the carbon-based magnetic iron-cobalt bimetal material; 5, separation of a magnetic material through an external magnetic field; thus, the method for removing the estrogen from the water by utilizing the carbon-based magnetic iron-cobalt bimetal material to activatethe peroxymonosulfate is completed. With the method provided by the invention, the removal efficiency of the estrogen in the water reaches 80% to 98%. The method provided by the invention has the following advantages: the removal rate is high; the process operation is simple; degradation by-products are non-toxic and harmless; the carbon-based magnetic iron-cobalt bimetal material has simple and practicable preparation method and easily-controlled load metal proportion of Fe and Co;a reaction is carried out at normal temperature and normal pressure, so energy consumption is reduced; and a catalytic material can be easily recovered and regenerated. The method provided by the invention can remove residual estrogen from the water.