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介绍了在ＶＣＪＵＬＩ基础上对北京谱仪Ⅱ顶点探测器进行离线刻度的方 法，包括整体Ｔ０的获得、单丝零时间ｔ０的扣除、丝位的修正、顶点探测器相对 于主漂移室位置的校正以及漂移时间一漂移距离关系的修正等．并由此给出了 北京谱仪Ⅱ顶点探测器的主要参数：空间分辨好于１００μｍ．
The method of offline calibration of Beijing spectrometer Ⅱ vertex detector based on VCJULI is introduced. The method includes the whole T0 obtaining, the deduction of monofilament zero time t0, the correction of filament position and the correction of the position of the vertex detector relative to the main drift chamber As well as drift time drift distance relationship correction. And the main parameters of Beijing spectrometer Ⅱ vertex detector are given: the spatial resolution is better than 100μm.