The invention belongs to the field of chemical industry, and particularly relates to a sodium treatment method for extracting vanadium cleanly. The invention aims to solve the technical problem of providing the sodium treatment method for extracting vanadium cleanly, and the method comprises the following steps of adjusting the pH value of the vanadium-containing liquid to 2.0-4.0 by using organicacid, then adding a vanadium precipitation agent for reaction, and carrying out solid-liquid separation to obtain ammonium polyvanadate and vanadium precipitation wastewater. According to the method,the pH value of the vanadium-containing liquid is adjusted by adopting the organic acid, and the vanadium precipitation wastewater obtained after vanadium precipitation does not contain sulfate radicals, chloride ions and the like, so that the vanadium precipitation wastewater can return to the roasting process after concentration.