Provided are a parcel sorting system and method. The parcel sorting system is arranged in layers and includes: a parcel sorting layer located on an upper layer of the parcel sorting system, a moveable container carrying layer located on a lower layer of the parcel sorting system, a parcel delivery robot and a control device. The parcel sorting layer includes a modular entity platform that is a physical platform formed by splicing multiple splicable units and used for sorting parcels. The modular entity platform includes multiple delivery lattices arranged in an array and a traveling area constituted by gaps between the lattices and used for the parcel delivery robot traveling. One delivery lattices corresponds to one or more delivery path directions. The moveable container carrying layer includes multiple moveable containers, and a part of the containers are located below the lattices and receive the parcel from the parcel sorting layer.