A method for controlling flows of a logical link layer in a near field communication (NFC) software stack includes steps of: arranging a Send Window and a Receive Window in the logical link layer for controlling flows of transmitted data frames; adjusting the size of the Send Window and the size of the Receive Window according to a transfer rate determined based on upper-layer application, communication delay time determined based on channel quality, and the size of a data frame; and controlling flows of the output terminal according to the size of the Send Window, and controlling flows of the input terminal according to the size of the Receive Window.