The invention discloses a communication model of a large complex structure damage diagnosis system and relates to the technical field of communication models. The communication model of the large complex structure damage diagnosis system comprises a facilitator, a sensing body, a damage evaluation body, a signal processing body, communication ports, a monitoring object and a KQML protocol, whereinthe sensing body, the damage evaluation body and the signal processing body are electrically connected with the facilitator through the communication ports, the monitoring object is electrically connected with the communication port of the sensing body, and the KQML protocol is electrically connected with the facilitator. After the technical scheme is adopted, the communication model has the benefits as follows: the design is reasonable, a new coordination mode is developed, conflict among bodies can be effectively solved, and a solid foundation is laid for efficient coordination work of thesystem.