The invention discloses a digital correlation demodulation circuit based on 14443-BPSK (binary phase shift keying) subcarriers. The digital correlation demodulation circuit comprises a subcarrier edge detecting circuit, a reference subcarrier generation circuit, a correlation counter and a correlation decoding logic circuit, wherein the subcarrier edge detecting circuit is used for generating 1 Bit boundary matching success signals; the reference subcarrier generation circuit is used for generating 847k reference subcarrier signals based on the 1 Bit boundary matching success signals according to a system clock lock-on boundary; the correlation counter is used for calculating and counting inclusive-or operation results of serial code steams with subcarriers to be demodulated and the 847k reference subcarrier signals; the correlation decoding logic circuit is used for judging whether phase of the last Bit is overturned or not according to the counting results of the correlation counter, wherein the judgment results about whether to overturn or not are the serial code steams without subcarriers after the correlation subcarriers are demodulated. The digital correlation demodulation circuit based on 14443-BPSK (binary phase shift keying) subcarriers can correctly decode data to some extent and reduce error rate.