To　make　measuring　operation　convenient,　a　wireless　handheld　control　box　for　coordinate　measuring　machine　based　on　ARM　and　bluetooth　was　introduced.　The　touch-screen　buttons　module　based　on　a　embedded　WinCE　operating　system　and　the　joystick　and　speed　control　module　were　developed,　combined　with　the　bluetooth　module　to　achieve　wireless　transmission　of　control　command　and　measurement　data.　It　can　real-time　display　the　measuring　point　coordinates,　number　of　the　measuring　points　and　the　characteristic　information.　It　can　accurately　transmit　control　command　and　measurement　information,　and　no　data　loss.　It　has　applied　to　the　measuring　machine　for　complex　geometry　based　on　form-free　measurement　mode.