Detection device

The invention discloses a detection device, which comprises a shell in which an accommodating cavity communicated with the outside is defined; the key assembly is arranged on the shell, and a part of the key assembly extends into the accommodating cavity; the detection assembly is provided with a limiting hook, a positioning buckle arm and an energy storage bending arm, and the part, extending into the shell, of the key assembly is linked with the positioning buckle arm; the detection carrier is suitable for being inserted into the shell, the detection assembly is used for detecting a sample on the detection carrier, the detection carrier is provided with a lock catch position and a limiting groove, under the condition that the detection carrier is inserted into the shell by a set depth, the detection carrier extrudes the energy storage bending arm, and the lock catch position is clamped with the positioning buckle arm; under the condition that the key assembly is pressed, the key assembly drives the position