With the development of international shipping industry，the demand for expanding the yard space is increasing. But the port land resource is increasingly scarce. To increase the container storage capacity significantly and reduce the container dump rate under the condition of limited storage area in the port，we propose a new yard mode which is based on the automatic tridimensional storage technology. Comparing with other traditional yard types，this mode shows excellent performance in land utility. Through optimizes and improves the existing yard system，this mode increases the yard storage capacity and decreases the dump rate，and realizes efficient port production and operation.