Customs declaration is one of the necessary links to fulfill the customs entry and exit procedures. Customs declaration refers to the process that the consignee or consignor of import and export goods, the person in charge of inbound and outbound means of transport, the owner of inbound and outbound articles or his agent go through the entry and exit formalities of goods, articles or means of transport and related customs affairs with the customs, including declaration to the customs, submission of documents and acceptance of customs supervision and inspection.