Elevator hoistway door system

The invention relates to an elevator hoistway door system and solves the problems that an existing elevator hoistway door system has low utilization rate for the space of a shaft and due to adoption of a steel wire rope for linkage, the existing elevator hoistway door system has a complex structure and is inconvenient to install. The elevator hoistway door system comprises a hoistway door and an upper sill with guide rails; the hoistway door comprises door sheets and hanging plates connected to the upper parts of the door sheets; sliding wheels are respectively arranged on two hanging plates; the two hanging plates are connected to the guide rails in a sliding manner by the sliding wheels; two door sheets are of an embedded structure; and traction mechanisms are arranged between the two hanging plates. The hoistway door adopts the embedded design, so that the two door sheets only occupy the space of one door sheet originally and a door opening only needs to be formed on one side of a lift car, so that the spa