The invention discloses a method for removing stibium in copper electrolyte. The method comprises the steps of cooling after concentrating the copper electrolyte, and filtering out produced copper sulfate pentahydrate, or concentrating the copper electrolyte after decoppering the copper electrolyte; then putting the solutions obtained through the two methods into a container, and adding a solution of solid salt containing precipitated stibium for improving the precipitation speed; standing the mixed solution and filtering; and carrying out solid-liquid separation to separate the precipitated solid salt containing stibium. According to the method for removing the stibium in the copper electrolyte, the stibium removal efficiency is high, toxic and harmful gas cannot be produced, zero pollution is realized, the power consumption is low, the solution treatment amount is large, the technical conditions in the treating process are stable and easy to control, the steps of the operation process are simple, the enclosed environment of a treatment system is good, the treatment cost is low, and the solution without the stibium can be subjected to electrolysis continuously. Meanwhile, equipment used by the invention is conventional equipment, and is simple to operate and convenient to maintain.