针对核仪器标准“未进行误差合成而不能给出最大工作误差”和“单项误差的测量、计算方法不同”两个问题带来的困难，建议制定“核仪器测量的误差”标准。通过研究误差理论和分析现行核仪器标准中关于误差合成计算公式，本文提出了误差合成的计算方法以及统一固有误差、重复性、不稳定性和非线性等误差的测量和计算方法的具体建议。 It is suggested that the standard of “error of nuclear instrument measurement” be proposed for the difficulties caused by two problems of nuclear instrumentation standard, “no maximum error of synthesis can not be given and no single error has been measured” and “different method of calculation”. By researching the theory of error and analyzing the formula of error synthesis in the current nuclear instrument standard, this paper puts forward the calculation method of error synthesis and the concrete suggestion of measuring and calculating the error of uniform inherent error, repeatability, instability and nonlinearity.