The invention relates to a method for removing calcium from an aluminum chloride solution. The method comprises the following step: feeding an AlCl3 solution with calcium ions through a resin column filled with a calcium removal resin, and collecting effluent so as to obtain an AlCl3 solution of which calcium is removed, wherein the calcium removal resin comprises amino, hydroxyl and sulfur and isprepared according to the following steps: 1) enabling dry white resin spheres to react with a chloromethylation reagent so as to obtain chlorine spheres; 2) enabling the chlorine spheres obtained inthe step 1) to react with a hydroxyl-containing organic ammonia solution according to a mass ratio ranging from 1:4 to 1:6, and drying, so as to obtain an amino-and-hydroxyl-containing resin; 3) mixing the amino-and-hydroxyl-containing resin obtained in the step 2) with a swelling agent so as to obtain a swelled product; 4) enabling the swelled product obtained in the step 3) to react with alkalisubstances and sulfur-containing compounds, thereby obtaining the calcium removal resin. By adopting the method provided by the invention, the concentration of calcium ions in the aluminum chloride solution after calcium removal can be 0.06/L or lower, no extra impurities are introduced into the solution, and great economic benefits and social values can be made.