Input device provided with near field communication, erection and protection functions

The utility model relates to an input device provided with near field communication, erection and protection functions which is suitable for an electronic device. The electronic device comprises a near field communication reader. The input device comprises an input unit, a multi-folded cover and a near field communication antenna. The input unit comprises a housing and an input interface. The multi-folded cover comprises a cover body connected with the housing and a positioning element used for positioning settings of the electronic device. The near field communication antenna is arranged at the multi-folded cover and electrically coupled to the input interface and connected with a signal of the near field communication reader. When the input device is in an engaged state, the right side of the input unit is engaged with that of the electronic device, the back side of which is covered by the multi-folded cover. When the input device is put in use, the input unit and the electronic device mutually expand and t