Through analysis of machining technics for the valve body parts,the fixture design for valve body parts double angle oblique hole was introduced from selecting machining scheme,determining parts localization plan,selecting drill template type and de-signing clamping fixture mechanism. The working principle of the fixture was introduced. By measuring error of machining parts,it is shown that this designed fixture is reasonable,and can satisfy the requirements of parts machining error in size and form&position er-rors.%分析阀体零件加工工艺，从加工方案选择、零件定位方案的确定、钻模板类型选择、夹紧机构的设计等介绍阀体零件双角度斜孔夹具的设计，并介绍了夹具的工作原理。通过检测加工零件的误差，可知该夹具设计合理，能满足零件的尺寸公差和形位公差的要求。
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