The invention discloses a method for compounding and solidifying silty soil by virtue of emulsified asphalt, belonging to the technical field of highway engineering. The method contains the following components in parts by weight: 10-20 parts of emulsified asphalt, 1-5 parts of cement and 75-90 parts of silty soil. According to the method, the silty soil can be well solidified in regions lacking of sand and gravels, a useable pavement material is provided for the regions lacking of the sand and the gravels; and the silty soil solidified by virtue of the method has the advantages that the strength is rapidly enhanced, the stability is high, the wear resistance and the flexibility are good, the cost is saved, and the construction is facilitated.