A fingerprint sensing method and a fingerprint sensing device are provided. The fingerprint sensing method includes the following steps. A first supply voltage is provided to power a fingerprint sensing circuit of the fingerprint sensing circuit. When the fingerprint sensing circuit is powered by the first supply voltage, it is detected whether a finger touch occurs. In response to determining that the finger touch has occurred, a second supply voltage is provided to power the fingerprint sensing device. A fingerprint image sensing is performed to obtain a fingerprint image when the fingerprint sensing circuit is powered by the second supply voltage.