The invention discloses a method for removing copper in a nickel electrolysis anode solution for purification. The method includes the steps that reducing agents are added into the nickel electrolysis anode solution to adjust the redox potential of the nickel electrolysis anode solution; dilute sulphuric acid is used for adjusting the pH value of the solution to 1.3-4.0, and the temperature of the solution is controlled within the range of 50-70 DEG C; barium sulfide powder is added into the adjusted solution, is stirred at the temperature of 50-70 DEG C and reacts for 20-50 minutes, hot filtering is carried out, and the copper content in the solution is measured by collecting the filtrate. The method for removing the copper in the nickel electrolysis anode solution for purification has the advantages of being obvious in purification effect, easy to operate, low in operation cost, environmentally friendly, no-toxic and the like.