Network payment method and system thereof

The invention discloses a network payment method and a system thereof. The method comprises the following steps: a user selects goods through a shopping client, and the shopping client sends information to a center server; the center server generates an only identification code according to information sent by the corresponding shopping client, and sends the identification code to the corresponding shopping client; according to the only identification code, the user comes to a payment terminal to pay cost, and the payment terminal sends the only identification code to the center server for verification; after success of verification, an attribute representing whether pays or not in information corresponding to the only identification code is modified, and notification information is sent to the center server simultaneously. According to the method and the system in the invention, a payer can pay cost at a nearby convenience store, and great convenience is brought to the payer without Internet banking.