In order to identify and analyze the group unsafe behaviors in coal mines and explore the internal relationship of the unsafe behavior propagation network, the coal mine accident reports in the past three years were used as the original data. Based on the grounded theory, the unsafe behaviors of various groups were extracted from the perspective of human factor analysis and group classification. The complex network theory was used to establish the unsafe behavior propagation network model. The distribution characteristics, propagation rules and internal attributes of unsafe behaviors were explored, and the key unsafe behaviors were obtained. The results show that there are common unsafe behaviors and specific unsafe behaviors in coal mine groups, and the communication network is closely related and highly correlated. Among various groups, managers and technicians are at the core of the communication network, and the key unsafe behaviors of the group mainly exist in technicians, managers and government departments.