A proton beam positioning method of proton therapy equipment is disclosed, comprising: first, providing a proton therapy equipment then using an optical 3D coordinate tracking module to measure an actual rotation coordinate of a moving rotary arm of the proton therapy equipment so as to obtain a mechanical error then using a proton beam detector to measure an actual coordinate of a proton beam ejected by a proton beam nozzle of the proton therapy equipment so as to obtain a magnetic field error and finally, using the mechanical error and the magnetic field error to adjust a control system, making the rotary arm move according to a corrected rotation coordinate in conjunction with the proton beam nozzle ejecting a corrected proton beam to a correct coordinate. Therefore, this invention can correct the deviation of the proton beam.一種質子治療設備之質子束的定位方法,首先,提供一質子治療設備;接著,利用一光學立體座標追蹤模組量測該質子治療設備的一旋轉臂移動的一實際旋轉座標,以取得一機械誤差;再利用一質子束偵測器量測該質子治療設備的一質子束噴嘴所射出的一質子束的一實際座標,以取得一磁場誤差;最後,利用該機械誤差與該磁場誤差調校一控制系統,令該旋轉臂得依一校正後旋轉座標移動而搭配該質子束噴嘴發射一校正後質子束至一正確座標。據此,本發明得以校正該質子束的偏移。12‧‧‧旋轉臂13‧‧‧質子束噴嘴131‧‧‧質子束30‧‧‧質子束偵測器D1‧‧‧第一方向D2‧‧‧第二方向
