Detection device, electronic equipment and reminding method

The invention provides a detection device, electronic equipment and a reminding method. The detection device comprises a detection assembly and a shell assembly which can move relatively. One of the detection assembly and the shell assembly is provided with a matching position, and the other one of the detection assembly and the shell assembly is provided with a matching piece corresponding to the matching position; the detection assembly can move to a first position relative to the shell assembly under the action of external force, and when the detection assembly is at the first position, the matching piece can be matched with the matching position, and restoring force is generated between the detection assembly and the shell assembly; when the external force is removed, the detection assembly moves to the second position, and when the detection assembly is at the second position, the matching piece is separated from the matching position; the detection assembly is provided with a detection surface which is