The invention provides a comprehensive utilization method of a pork precooking solution. The comprehensive utilization method mainly comprises the following steps: concentrating the pork precooking solution into a concentrated solution, removing a fishy smell, heating, salting, standing, and centrifuging, thus obtaining upper grease and a lower solution; obtaining lard oil by refining the upper grease, and obtaining protein or seasoning by carrying out recovery treatment on the lower solution, wherein the seasoning comprises one of semisolid seasoning and solid seasoning. According to a preparation method disclosed by the invention, by adopting a special salting and low-temperature degreasing technology, separation of the protein and the grease is effectively realized, each step is carefully designed, and connection of front and back steps is reasonably planned, for example, by designing specific technological steps of concentrating, refining and the like, high-quality lard oil can be prepared, and meanwhile, the seasoning can also be prepared.