广义信息域是所有可表示为二进制编码的数字信息构成的空间.本文提出一种基于广义信息域离散轨迹变换的随机数生成器.该生成器将广义信息域作为熵源空间,把用户选择的数字信息作为熵源输出,在对熵源输出进行重构处理的基础上使用离散轨迹变换方法生成随机数.本文提出的生成器在平衡度、周期和抗碰撞等性能上均表现优良,并通过美国国家标准技术研究院测试证明其具有理想的随机性,可以供用户快速方便地生成高安全随机数. The generalized information domain is all the space that can be represented as a binary coded digital information.This paper presents a random number generator based on discrete trajectory transformation of generalized information domain.The generator uses the generalized information domain as the entropy source space, The digital information is output as entropy source, and the discrete-time transform method is used to generate random numbers based on reconstructing the output of entropy source. The generator proposed in this paper performs well in performance of balance degree, period and anti-collision, National Institute of Standards and Technology test proved that it has the ideal randomness, for users to quickly and easily generate high security random number.