本文对中国古代现有历书中历注类目作了初步的探讨。有些历注项目具有一定科学意义,有些历注项目则是古代遣风的延续。不少有科学意义的类目披上了浓重的神秘色彩。本文提出有些历注项目是由于古代以阴阳五行理论解释天度与气数相应而导致了某种神秘意义。 This article makes a preliminary study of the categories of almanac in ancient Chinese almanacs. Some calendar items have some scientific significance, and some calendar items are the continuation of ancient sending people. A lot of scientific significance of the category put on a strong mystery. This article suggests that some of the calendar items are due to the mystical significance of ancient interpretation of the degree of heaven and the quantity of gas caused by the theory of yin and yang.