The　present　invention　discloses　an　unmanned　aerial　vehicle　fixed-point　hovering　system　and　method,　　relating　to　the　technical　field　of　unmanned　aerial　vehicles,　　and　particularly　relating　to　an　unmanned　aerial　vehicle　fixed-point　hovering　system　and　method　applicable　in　an　indoor　environment.　The　system　comprises　an　unmanned　aerial　vehicle　flight　control　unit,　　a　fixed-point　hovering　control　module,　　and　an　unmanned　aerial　vehicle　motor　module.　The　unmanned　aerial　vehicle　flight　control　unit　is　used　to　control　flight　of　the　unmanned　aerial　vehicle.　The　fixed-point　hovering　control　module　is　used　to　control　fixed-point　hovering　during　the　flight　of　the　unmanned　aerial　vehicle.　The　motor　module　is　used　to　change　a　flight　motion　status　of　the　unmanned　aerial　vehicle.　The　fixed-point　hovering　control　module　provided　by　the　present　invention　uses　textural　features　to　acquire　an　effective　region,　　thereby　reducing　the　amount　of　computations　required　compared　with　a　conventional　optical　flow　fixed　point　method.　An　optical　flow　field　for　the　effective　region　is　calculated　by　using　an　optical　flow　method,　　and　control　acceleration　information　is　obtained.　The　invention　reduces　the　computations　required　for　an　optical　flow　fixed　point,　　and　improves　computational　timeliness　and　stability　of　fixed-point　hovering.