A process for removing ruthenium from rhodium-iridium residues includes the following steps of stopping introducing chlorine after introducing chlorine into an obtained rhodium-iridium solution to control the potential to be 900 mV or above, wherein the step is aimed at controlling rhodium-iridium at a high valence state as far as possible so that hydrolytic precipitation can be easy; adding liquid caustic soda with mass percentage of 30-40% to control the pH value of the material liquid to be 11-12, stopping introducing chlorine when the pH is reduced to be 8-9, repeating the steps three times, and conducting filtering to obtain rhodium-iridium hydrolysis residues; pulpifying the rhodium-iridium hydrolysis residues through a liquid alkaline solution with mass percentage of 1-5%, controlling the liquid-to-solid ratio to be smaller than 3:1, and starting to gradually adding a small amount of sodium bromate solution for open oxygenation volatilization of ruthenium when heating is conducted to nearly boiling, wherein the consumption of sodium bromate is 10-20 times of the content of ruthenium in order to thoroughly oxidizing ruthenium, a theoretical amount of oxidant is added after no ruthenium volatilization is detected over the material liquid by means of thiourea, hydrochloric acid is added after cooling to control the acidity, and the next step of rhodium-iridium separation is conducted. The content of ruthenium in a rhodium product produced in the process reaches 99.99%, namely the standard of the impurity ruthenium in the rhodium product.