A fingerprint detection device comprises a plurality of fingerprint sensing circuits and a processor. The plurality of fingerprint sensing circuits is corresponding to a plurality of sensing zones respectively. The processor is electrically coupled to the fingerprint sensing circuits through a shared transmission bus. The processor is configured to receive information of a touched area of each of the sensing zones, determine a transmission sequence according to the touched area of each of the sensing zones, and control the fingerprint sensing circuits to transmit sensing information of the corresponding sensing zones to the processor through the shared transmission bus according to the transmission sequence.