Anti-skid　Braking　Control　Box　is　one　of　the　most　important　equipments　in　the　aircraft.　It　is　dangerous　and　costly　to　modify　the　parameters　of　the　controller　directly.　In　the　paper,　a　digital　aircraft　is　built,　and　the　velocity-rate-controlled　and　pressure-bias-modulated　control　algorithm　with　balance　compensation　is　used　in　the　Anti-skid　Braking　Control　Box,　USB　input/output　Board　exchanges　data　between　the　digital　aircraft　and　Anti-skid　Braking　Control　Box.　Digital　aircraft　can　show　many　analyses　quickly　on　the　computer　by　figure　and　their　fidelity　is　so　high　that　many　parameters　can　be　modified　easily,　the　sideslip　is　restrained　effectively,　and　the　braking　efficiency　is　high.　©　2010　IEEE.