A content streaming system includes: an encoding unit generating frame-by-frame mesh data and motion data, converting the mesh data into a geometry image, encoding the geometry image with tagged motion data, and generating first streaming data; a traffic control unit selecting a drop frame dropping the geometry image based on a network bandwidth, dropping the geometry image of the drop frame from the first streaming data, and generating second streaming data; and a decoding unit decoding the second streaming data, converting a geometry image of the decoded second streaming data into mesh data, and interpolating and generating mesh data of the drop frame.