In　this　paper,　a　novel　no-asbestos　brake　composite　reinforced　by　natural　bamboo　fibers　is　studied.　The　bamboo　fibers　are　modified　by　heat　treatment,　alkali　treatment　and　coupling　treatment　respectively.　Tribological　performance　of　different　fibers　reinforced　composites　are　developed　by　means　of　friction　test　and　microstructure　observation.　The　results　show　that　heat　treatment　of　bamboo　fibers　at　140　degrees　C　for　4　hours　makes　the　friction　and　wear　characteristics　of　brake　composites　more　stable　than　the　untreated　ones,　but　poor　wear　resistance　at　low　temperature　and　heat　fade　still　exist.　There　is　no　significant　change　on　fiber　surface.　The　alkali　treatment　of　17%　NaOH　solution　for　12　hours　contributes　to　desirable　combination　of　higher　friction　coefficients　and　lower　wear　rates,　and　the　surface　morphology　shows　a　number　of　deep　grooves　that　avail　the　interface　bonding.　The　effect　of　coupling　treatment　with　KH550　on　tribological　performance　of　composites　have　the　similar　rule　to　that　of　the　alkali　treated　ones　except　of　heat　fade,　and　the　fiber　surface　is　evenly　coated　with　the　coupling　agent,　which　enhances　the　bonding　of　fibers　and　resin　but　fails　at　elevated　temperature.