The invention discloses a method for extracting valuable metals from electronic waste. The method comprises the following concrete steps: smashing; oxidant ammoniac leaching; separating organic components; purifying leaching solution and electrodepositing to obtain the final products of organic granules, gold/silver/palladium powder and cathode copper, more concretely, the method comprises the following steps: carrying out the selective leaching on the smashed electronic waste by an oxidant ammoniac system; separating the organic granules on the basis of the characteristic that the organic components in the smashed electronic waste float on the surface layer of the leaching solution, for the density of the organic components is lower, whereas the valuable metals, such as Au, Ag, Pd, Cu, Ni, Cd, Zn and Pb, enter the solution; then, extracting the valuable metals of Au, Ag and Pd from the leaching solution by replacement; and finally obtaining the electrodeposit copper by the electro-deposition method, and extracting the metals of Ni, Pb, Zn and Cd from the electrolyte by the open-circuit method after the enrichment of the electrolyte. The invention has the outstanding advantages of high material adaptability, high metal recovery rate and low environmental pollution, and achieves the balance between the environmental benefit and the economic benefit.