Belonging to the field of chemical product preparation, the invention specifically discloses an efficient synthesis method for tri(acetylacetone)ruthenium and application thereof. The method includes: dissolving a trivalent ruthenium compound in a mixed solution of deionized water and alcohol, adding acetylacetone, metering and adding a reducing agent, carrying out reaction at 80DEG C for 0.5-4h, then using alkali to adjust the pH value to 8-9, further carrying out reaction for 0.5-2h, then stopping heating, performing full cooling to room temperature, and then conducting pumping filtration and washing to obtain the product tri(acetylacetone)ruthenium. Compared with the prior art, the method provided by the invention has the advantages of low requirement for synthetic equipment, simple and convenient synthesis process, no need for extra purification operation, high product purity (greater than 99%), and a tri(acetylacetone)ruthenium yield up to 95% or more.