提出一种实用的汉字字形合成方法。本方法用三次Ｂ－样条插值曲线表示字形笔划的轮廓线。根据Ｂ－样条插值曲线的连续性与唯一性，在待合成字形笔划曲线之间建立对应关系。给定合成比例系数，统一曲线控制点长度与参数取值范围，得到新的字形笔划曲线表达式，产生新的汉字字形。从实验结果看，该方法简洁，容易实现，不失为一种有效的汉字字形合成方法。

This paper presents a practical method of Chinese fonts composition which uses uniform cubic B-spline interpolating curves to express Chinese stroke out line. It builds correspondence relationship between composited curves based on continuity and uniqueness of B-spline interpolating curve. If compositin ratio coeff. and unified control point's length of B-spline curves and range of their parametic values are given, new fonts are generated by new stroke out line expression. Simulation results show it is a simple, easy and effentive method of font composition.