Land reclamation and port construction have been conducted in our country. A kind of efficient treatment technique and construction process which suits to large volume reclamation foundation project needs to be explored. The “Pneumatic Flow Mixing Stabilized Soil Method” which is developed by Japan recently is a kind of efficient treatment technique which suits to the preparation, transmission, and reclamation of large volume stabilized soil. The application, construction equipment, and construction process of the“Pneumatic Flow Mixing Stabilized Soil Method”are introduced, and a kind of efficient treatment technique and construction process is proposed based on the “Pneumatic Flow Mixing Stabilized Soil”Method in Japan and the dredged clay treatment technique in China.