The invention provides a ticket check method and a ticket check system based on a movie theatre audience number management system. The movie theatre audience number management system comprises a detection node, a management node, a data collection terminal, a monitoring terminal and an alarm and power supply control system. According to the system, in a software aspect, a diffusion forwarding routing algorithm based on a backbone network and a data fusion algorithm independent of an application are designed, seat seating information data transmission and management are finished, and therefore, the system stability and timeliness are improved. According to the ticket check method based on the system, the movie theatre audience number is remotely monitored; the effective management is carried out on the ticket evasion condition in the movie theatre; the management pressure of managers in the movie theatre is mitigated; the manpower and material resources are reduced; the operation cost is reduced; and the management level of the movie theatre is improved.