Post-processing method of ruthenium complex reaction liquid and obtained ruthenium complex crude products

The invention discloses a post-processing method of ruthenium complex reaction liquid. The method includes the following steps: step A. cooling the ruthenium complex reaction liquid to 10-50 DEG C; step B. adding the solvent which is frozen to -50-0 DEG C and used for precipitation, precipitating out ruthenium complex, and obtaining ruthenium complex precipitation mixed liquor; step C. enabling the ruthenium complex precipitation mixed liquor to be in full precipitation at the temperature of -50-0 DEG C; and step D. unfreezing, filtering, cleaning, drying and obtaining ruthenium complex crude products. According to the post-processing method of ruthenium complex reaction liquid, before the solvent used for precipitation is added, the ruthenium complex reaction liquid does not need to be steamed in a rotary mode to remove the solvent, but precipitation is directly carried out. Therefore, post-processing time is shortened, isomer production is reduced, and ruthenium complex crude products can be obtained with high yield and low cost.