The invention discloses a method for reclaiming germanium from organic germanium waste liquid. The method comprises the following steps of: adding MgCl2 and CaO into the organic germanium waste liquid in a mass ratio of MgCl2 to Ge of 20-40: 1 and in a mass ratio of CaO to Ge of 30-50: 1, adjusting pH value to between 11 and 12 by using NaOH solution, performing sedimentation of the germanium, burning the germanium sediment at the temperature of between 600 and 700 DEG C to obtain germanium concentrate containing 3.0 to 4.5 mass percent of Ge, and chloridizing and distilling the germanium concentrate to reclaim the germanium. The method for reclaiming the germanium from the organic germanium waste liquid reclaims the germanium by adopting magnesium chloride-calcium oxide sediment, reduces the using amount of magnesium chloride, reduces the production cost for reclaiming the germanium and effectively reclaims the germanium; and the reclamation rate of the germanium is over 90 percent. The method can treat 100m<3> of organic germanium waste liquid every year, reclaim over 1 ton of germanium metal and create 1.5 million of profit and tax. The method obtains good economic benefit, and establishes an effective process flow for reclaiming the germanium from the organic germanium waste liquid.