Abstract: A termite detection device, system, and method. The device includes a housing and bait strip. A first circuit board and detection switch are on the bait strip. A deep hole with a non-through bottom is in the bait strip. A supporting body capable of ascending/descending is in the deep hole for supporting a detected body. The first circuit board is electrically connected to the switch, to determine on/off of the switch. The system includes the termite detection device, a detector, and a database. The device sends a signal of the switch to the database via the detector. In the method, the detector triggers the termite detection device or the termite detection device is automatically triggered. The first circuit board determines on/off of the switch, and sends to the database via the detector for processing/storage. The switch is in a power-off state when no detection is performed.