Abstract: Based on the analysis of roof water inrush mechanism and influencing factors in mine working face,This article takes safety early warning theory as a guide and constructsthe safety early warning system of roof water inrush in mine working face which contains several function models such as basic date layer,date processing layer,early warning analysis layer,auxiliary decision-making layer and man-computer interactive interface.We analyze the warning indicators of safety early warning system and illustrate the functions of main system architecture,we hope to provide a new way of thinking on construction of safety early warning system of roof water inrush in mine working face from the view of technology and methods.