The utility model discloses a timing thumbtack which comprises a thumbtack head, a thumbtack cap, an elastic force storage mechanism, a knob and a timing fan. The nail head is connected with the nailcap; the elastic force storage mechanism is mounted in the nail cap; the knob can rotate relative to the nail cap and is connected with the elastic force storage mechanism; the timing fan comprises amovable edge, a fixed edge, a fixed connection mechanism and a fan face, the two ends of the fan face are fixedly connected to the movable edge and the fixed edge respectively, the movable edge is fixed...
