A hydrogen detection apparatus (1) includes a hydrogen sensor (100) in which a resistance value fluctuates in response to a presence of a hydrogen gas, a sensor control circuit (200) that senses the resistance value of the hydrogen sensor (100), and a microcomputer (300) that sets an off time that differs depending on an operating environment and intermittently drives the sensor control circuit (200). The hydrogen detection apparatus (1) is installed in a fuel cell vehicle, and the microcomputer (300) sets an off time when the fuel cell vehicle is driving as t3, and an off time when the fuel cell vehicle is parked as t1 that is longer than t3. The microcomputer (300) sets an off time when the fuel cell vehicle is parked in an enclosed space as t1b that is longer than t3, and an off time when the fuel cell vehicle is parked in an open space as t1a that is longer than tlb. The microcomputer (300) sets the off time when the fuel cell vehicle is driving as t3, and an off time when the fuel cell vehicle is stopped as t2 that is longer than t3.
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