Abstract: The influence of earthquake disaster is seldom considered in daily mine safety work, which can not meet the new requirements of mine safetyin the new era and new situation. In this paper, through the study of typical cases of coal mine earthquake disaster, there is a close relationship between coal mine production accidents and earthquake disasters. In view of the main problems existing in the prevention and control of earthquake induced secondary disasters in coal mines, the types of hidden dangers that may exist in the disaster bearing body mainly composed of coal mine lifeline system are studied, and the relationship between the potential hazards in the disaster bearing body and the types of post earthquake secondary disasters in coal mines is revealed;Based on this,the hidden danger investigation methods of coal mine earthquake disaster bearing bodies are proposed, and the hidden danger investigation index system of coal mine earthquake disaster bearing bodies is constructed.The research results show that: there are many types of potential hazards in coal mine to resist earthquake induced secondary disasters, including secondary mine water disaster, secondary gas disaster, secondary rock burst disaster, secondary electromechanical accident, secondary transportation and lifting accident, tunnel engineering damage, casualties and equipment damage, etc; based on the lifeline system of coal mine, the hidden danger investigation system of earthquake induced secondary disasters in coal mine includes 3 types, 32 kinds of basic information and 24 kinds of investigation indexes, including basic information of earthquake disaster prevention, ground engineering investigation and mine engineering investigation, can fully cover the hidden danger investigation work of coal mine earthquake disaster bearing body. This is of great significance to comprehensively investigate the hidden dangers of secondary disasters in coal mines, and accurately improve the seismic fortification level and seismic capacity of coal mines.