The invention discloses a method for converting an e-commerce temporary order into a formal order. The method comprises the following steps: receiving and verifying the state, the validity period and the address attribution of the temporary order; forming an aggregation key according to the
supplier identifier, the region identifier, the warehouse type and whether wholesale occurs, performing multi-dimensional splitting on the commodity set to obtain at least one sales sub-order, and generating a cost sub-order for the freight; a serial number
system associated with
payment is generated, and when multiple sales sub-orders or expense sub-orders exist, a top-layer serial number and multiple sub-serial numbers are generated and associated with the top-layer serial number and the multiple sub-serial numbers are stored; and the promotion activities and the coupons are allocated in the target sub-orders or the target commodities in proportion or according to rules according to the application range, and amount validity
verification is carried out. The invention further discloses a
system for converting the e-commerce temporary order into the formal order. According to the invention, an integrated
closed loop of a supply chain, promotion, logistics and finance is realized.