本文采用最优化方法研究了X射线衍射线线形分析中,用积分宽度法测算嵌镶尺寸和点阵畸变时,衍射线线形几何宽化的校正问题。寻求出物理宽化函数f(x)和几何宽化函数g(x)九种可能搭配中,未曾解决的四种搭配的几何宽化校正公式,并求出了Cauchy平方型与Cauchy平方型(CC-CC)搭配的几何宽化校正公式,从而完善了积分宽度法中几何宽化校正方法。 In this paper, using the optimization method to study the X-ray diffraction line shape analysis, using the integral width method to calculate the mosaic size and lattice distortion, diffraction line geometry geometric correction. We find out the nine kinds of geometric width correction formulas of the four kinds of collocated and unresolved physical width function f (x) and geometric width function g (x), and find out the relationship between Cauchy square type and Cauchy square type CC-CC) with the geometric width of the correction formula, thus improving the integral width method of geometric width correction method.