The invention belongs to the technical field of unmanned convenience stores, and particularly relates to a method and system for immediate taking and immediate taking based on RFID and face-scanning payment. The method comprises the following steps: S1, inputting face information, binding a signed payment protocol, recognizing the identity of a customer through face scanning, and enabling the customer to enter a store for release; S2, wherein each commodity comprises an RFID tag, and the commodity can be identified by identifying the tag; S3, triggering an infrared device RFID card reader in the identification area to read the current commodity information and judging the cost needing to be paid through the background; S4, scanning the face to confirm the identity of the user, and initiating a deduction request to the customer through third-party payment; and S5, opening an off-store channel for the customer to enable the customer to leave the store after determining that the deductionsucceeds. The concept that the unmanned convenience store can be taken away immediately in the true sense is achieved, the operation difficulty of customers is lowered, the shopping time of the customers is saved, the unmanned convenience store can truly achieve the capacity of providing service uninterruptedly for 24 hours, and a convenient and fast shopping concept is brought to the customers.