The invention belongs to the technical field of chemical treatment and relates to a method for removing chlorine in the process of zinc electrolysis by an ammonia method. The method includes: firstly,leaching is performed, wherein alkaline leaching is performed on a high-chlorine zinc-containing material with liquid ammonia; secondly, solid liquid separation is performed, wherein leachate is obtained; thirdly, purification is performed, wherein the leachate is subjected to oxidization iron removing and zinc powder replacement, and electrolytic clean liquid is obtained; fourthly, electrolysisis performed, wherein electrolytic residual liquid is obtained; and fifthly, chlorine removal is performed, wherein when the concentration of chlorine ions in the electrolytic residual liquid is between 180g/L and 280g/L, the electrolytic residual liquid is used for the leaching work procedure; and when the concentration exceeds 280g/L, part of the electrolytic residual liquid is used for the leaching work procedure, and the other part is subjected to standing cooling in a cooling pond, and clean liquid flows back to an electrolysis work procedure to be used. By using the method, the concentration of chlorine ions in electrolyte is effectively reduced, the current efficiency in the electrolysis process is improved, and it is guaranteed that production is continuously performed; and meanwhile, the precipitation speed of ammonium chloride is increased through the cooling pond, and the method is safe, capable of saving energy, easy to operate, small in investment, environment-friendly andfree of emission.