Distribution support method and system for online shopping

PURPOSE: A distribution supporting method for online shopping and a system thereof are provided to encode personal information of a product buyer or a consignee and deliver the encoded information, thereby reducing a possibility which the personal information is massively spilled. CONSTITUTION: A useable invoice number history is received and stored from a delivery company system(S300). Product order information excepting personal information is received and stored from a sale company server(S320). The personal information corresponding to the product order information is received and encoded from the sale company server(S330~S360). Invoice output information including the encoded personal information, the product order information and an invoice number is generated(S370). [Reference numerals] (AA) Buyer terminal; (BB) Seller server; (CC) Distribution supporting system; (DD) Delivery company system; (EE) Supplying company system; (S300) Invoice number range; (S310) Product order; (S320) Product order information except for personal information; (S330) Product order information; (S340) Invoice output request; (S350) Personal information request; (S360) Personal information transmission; (S370) Generating invoice output information by using encoded personal information, product order information and invoice number; (S380) Invoice output information; (S390) Decoding the encoded personal information and outputting the invoice