As　the　probe　alignment　error　influences　measurement　results　of　tooth　profile　deviations　of　arc　cylindrical　worms（ZC　worm）on　the　gear　measuring　center，a　probe　alignment　error　correction　method　should　be　established.　Based　on　the　equation　of　toroidal　enveloping　cylindrical　worm（ZC1　worm）tooth　flank　and　the　probe　alignment　error，an　axial　profile　measurement　error　model　for　the　ZC1　worm　is　established　to　correct　the　axial　coordinates　of　the　tooth　profile　measurement　points.　Then，the　worm　axial　profile　deviations　were　evaluated　according　to　the　accuracy　standards.　The　effects　of　varying　thread　number，module，and　reference　circle　diameter　on　the　tooth　profile　measurement　error　were　analyzed.　The　experimental　results　show　that　the　probe　alignment　error　has　little　effect　on　the　tooth　profile　form　deviation，while　the　maximum　difference　between　the　total　profile　deviations　before　and　after　the　probe　alignment　error　correction　reduced　from　1.　2　μm　to　0.　2　μm；that　between　the　profile　form　deviation　measurements　reduced　from　0.　5　μm　to　0.　3　μm；and　that　between　the　profile　slope　deviations　reduced　from　2.　5　to　0.　4　μm.　The　proposed　probe　alignment　error　correction　method　can　effectively　reduce　the　effect　of　probe　alignment　errors　on　worm　profile　deviation　measurements　of　gear　measurement　centers.　©　2024　Chinese　Academy　of　Sciences.　All　rights　reserved.