In parking system prepaid the present invention refers to fall below at time parking reserved time the remaining when the refund balance a speech output section f the voice or output in response to selection a to guide the air flow to refund parking fee device and method relates to, password table, recorded in a ticket refund for bar code scanner for reading bar-code (30) and a, prepaid beginning and time selectivity, and, a multiplexor for inputting refund request (32) and a, collection of parking fees levy fees for to (40) and a, output signal to a control unit (50) for delivering an input interface circuit part (34) and a, for parking time period is counted by the counting timer block (60) and a, when parking time fall below at residual parking time balance payment lowest after converting only if it exceeds a balance in the ad material and inputs balance the control unit (50) and a, control unit (50) a signal outputted from the for delivering output interface circuit part (38) and a, password table, refund ticket printer open bar code like (64) and a, display unit (66) and a, audio output, and processing status is displayed on for speech output section (70) and a, real estate dispenser (80) and a, parking area (200) a proximity sensor installed is for receiving data from a (LS) for data transmitting/receiving for receiver (36) and a, a remote main server modem for transmitting and receiving data parking from (68) which is formed of a..