A dental hand piece auxiliary system and its operating method are disclosed, the auxiliary system includes an operation unit, a positioning unit, a processing unit and a display unit. The display unit contains a cross-section movement display screen, an angle movement display screen, and a depth movement display screen. Through the cross-section movement display screen, angle movement display screen and depth movement display screen, an alert can be issued when a hand piece body of the operation unit is outside the movement position and angle, and an alert is issued when the remaining depth movement is 1mm. The present invention is characterized by using three-dimensional real-time information to allow for immediate judgment of the operating position of the hand piece body, thereby to facilitate users the most effective, convenient and highly accurate movement judgment.一種牙科手機輔助系統及其操作方法,該輔助系統包含一操作單元、一定位單元、一處理單元及一顯示單元。該顯示單元包含一截面移動顯示幕、一角度移動顯示幕以及一深度移動顯示幕。通過該截面移動顯示幕、角度移動顯示幕及深度移動顯示幕可以在該操作單元的一手機本體超出移動位置及角度時提出警示,則深度移動剩餘1mm時提出警示,以三維的即時資訊,可立即研判該手機本體的操作位置,以利使用者進行最有效、便利及準確性高的移動判斷。5‧‧‧顯示單元51‧‧‧截面移動顯示幕511‧‧‧截面座標512‧‧‧截面指標513‧‧‧截面警示系統516‧‧‧容許範圍517‧‧‧警戒範圍518‧‧‧截面座標顯示表52‧‧‧角度移動顯示幕521‧‧‧角度座標522‧‧‧角度指標523‧‧‧角度警示系統526‧‧‧容許範圍527‧‧‧警戒範圍528‧‧‧角度作標顯示表53‧‧‧深度移動顯示幕531‧‧‧深度警示系統532‧‧‧深度顯示表54‧‧‧雙介面切換幕55‧‧‧介面參考顯示幕551‧‧‧更換鑽針介面鈕552‧‧‧切換介面鈕553‧‧‧視窗選擇介面鈕554‧‧‧啟動關閉鈕555‧‧‧系統提示顯示幕56‧‧‧第一直剖顯示幕57‧‧‧第二直剖顯示幕58‧‧‧橫剖顯示幕
