Abstract: In order to study the temporal and spatial occurrence law of coal mine roof accidents in construction operation and the interaction degree of construction operation in the spacetime, 171 roof accident investigation reports have been coded and analyzed to obtain the relationship between roof accident spacetime and construction operation. Based on the complex network theory, the construction operation coupling network in roof accidents based on spacetime was proposed and constructed. The degree centrality and edge weight were used to analyze the association strength between construction operation and spacetime, and the coupling degree of construction operation in roof accidents was calculated by grey relation analysis. The countermeasures for preventing roof accidents in coal mine construction were proposed. The results show that the erection of support and 9:00-10:00, maintenance support and 14:00-15:00, recovery of single hydraulic prop and coal mining face, maintenance support and mining roadway, bolt （ｃａｂｌｅ） support and mining roadway heading face are strongly related in roof accidents. The average coupling degree based on spacetime is high for maintenance support, coal gangue removal, coal gangue or debris removal, pillar erection, shed erection and anchor bolt （ｃａｂｌｅ） support in roof accidents.