Door access control system and method

A door access control system and method is provided. The method comprises: a door access device; a server; and an owner's cellphone, a visitor's cellphone and a management center client that are in communication connection with the server; the management center client records door access device data and owner's data and uploads the data to the server; the server is used for managing a door access APP and storing and processing all running data of the door access device; the owner's cellphone registers on the server to acquire an owner login permission of the door access APP, the door access APP with the owner login permission authorizes the visitor's cellphone to register on the server to acquire a visitor login right of the door access APP to pass through a specified door access device within a specified time interval. An owner may authorize a visitor directly through the door access AP, operating is simple, temporary authorization from a management office or security staff is not required, and great convenience is brought to the owner and visitor; authentications of the owner and visitor are all controlled via the server, there is no need for pushing authorization information to a door access control for updating, and the door access control need not be networked.