A detection device is provided and the detection device includes: a body, including a first groove and a first opening; the first opening is on a first surface of the body and in communication with the first groove; a collector, configured to be at least partially accommodated into the first groove in a rotatable manner and being capable of rotating to allow at least part of the collector to extend out of the first opening in a process of detection; a test paper supplier, disposed on the first surface and configured to provide a test paper on a side of the first opening away from the first groove in the process of detection so as to collect a detection sample; and a detector, disposed on the first surface and configured to detect the test paper that has collected the detection sample.