《史记·律书》的算术部分由“律数、生钟分、生黄钟术”组成。书中采用了整数、分数和阴阳五行记数的算术手法,精炼地概括了先秦各家的律学计算法,首创“律数”概念,在一定程度上否定了管律的三分损益计算法,纠正了秦汉流行的错误五行记律法。历代学者对《律书》褒贬不一,为此分析和解释其算术法,将有助于对原文的理解。 “Historical Records Law” part of the arithmetic by the “law, birth bell, raw Huang bell surgery.” The book uses the arithmetic of integers, fractions and yin and yang five lines, refined the law of each school in pre-Qin method, the first “law” concept, to a certain extent, negated the law of third-party profit and loss calculation , Corrected the popular error of Qin and Han dynasties remember the law. The scholars of the past dynasties criticized the “law book”. Therefore, analyzing and explaining its arithmetic method will help to understand the original text.