Intelligent building control method, system and device

The invention discloses an intelligent building control method, system and device, and relates to the technical field of intelligent buildings. The system comprises an elevator signal sending unit, an elevator signal receiving unit and a visual intercom signal receiving unit, and the elevator signal sending unit is used for sending a warning signal to the visual intercom signal receiving unit, reminding people around to check visual intercom and sending an elevator control request signal to the visual intercom signal receiving unit. According to the elevator control system, a prompt is sent to the visual intercom through the elevator, the elevator control command is sent, the visual intercom controls the elevator to arrive at the designated floor, and then foreign personnel or family members forgetting to carry elevator cards can conveniently contact with users through the visual intercom through the elevator; a user can conveniently enable the elevator to carry outside people or family members forgetting to