Abstract: Constructing an ecological security pattern is an important way to ensure the sustainable development of mining cities.Taking Daye City as an example，a security pattern is constructed through the“source-corridor”model by balancing ecological supply and human demand.According to the whole demand of all population in Daye City and the daily demand of some nearby people，the ecological source areas are divided into two types:global source and local source，which are identified by direct picking and comprehensive evaluation respectively.So the ecological source identification model is consisted of human demand （expressed as convenience and people's demand of the patch） and ecological supply （expressed as importance and connectivity of the patch）.According to visual interpretation method，minimum cumulative resistance （MCR） model and classification results of ecological sources （global source and local source），the ecological corridors are divided into three types （key corridors，connective corridors and group corridors）.The results show that:①the area of the global and local source areas of Daye City is 144.61 km² and 197.42 km2 respectively，and the local source areas can be divided into 6 groups，the northwest water-land group with small patches and few patches is easily affected by external disturbances，while the eastern foothill group that located around the central city may be affected by urbanization;②the lengths of key corridors，connective corridors and group corridors in Daye City are 112.30 km， 179.45 km and 444.19 km respectively，some of the key corridors are affected by urban construction，mining activities or geological disasters，and the local resistance value is high，which need to be dredged and protected in the future urban planning and development.

Key words: Ecological security pattern, Mining city, Ecological supply and human demand, Global source, Ecological corridor, Minimum resistance model