For　avoiding　the　lander　landing　on　the　flat　areas　in　a　closed　environment　in　the　process　of　soft　landing　on　asteroid,　a　landing　area　selection　method　based　on　a　single　image　is　proposed.　Firstly,　the　proposed　method　of　binary　is　applied　to　extract　hazards,　and　the　skeleton　of　areas　with　no　hazards　is　extracted.　Secondly,　take　the　intersection　points　with　three　lines　of　the　skeleton　as　the　center　of　landing　circles.　Finally,　the　best　landing　circle　can　be　obtained　by　the　scoring　method　with　the　help　of　radius,　connection　among　circles,　circle＇s　texture　characters,　and　the　cluster　feature　of　circle＇s　center　with　all　the　hazards.　Compared　with　other　methods　the　proposed　landing　area　selection　method　is　highlighted　with　fewer　obstacles,　and　can　avoid　landing　on　the　place　in　a　closed　environment.　©　2015,　Chinese　Institute　of　Electronics.　All　right　reserved.