According　to　the　single　extreme　value　feature　of　the　relationship　curve　of　adhesion　coefficient　between　tire　and　road　versus　slip　rate,　the　fuzzy　self-optimizing　control　algorithm　is　applied　to　the　research　on　the　controller　for　vehicle　pneumatic　ABS,　and　the　effective　control　of　the　algorithm　over　vehicle　pneumatic　ABS　is　verified　through　hardware　in　the　loop　testing.　Compared　with　traditional　logic　threshold　algorithm,　fuzzy　self-optimizing　control　algorithm　has　the　features　of　simpler　structure　and　the　adaptability　to　the　changes　of　road　surface.