The Book of Qi Yaomin, with a total of 92 articles, is 10. Counting the preface and miscellaneous remarks before the first volume, there are more than 1 15000 words in total. Among them, there are about 70 thousand words in the text and more than 40 thousand words in the notes. Such a grand space is also rare in China's ancient agricultural books. Qi Yao Min Shu has a wide range of contents, from farming to making vinegar sauce, and everything related to agricultural production and farmers' lives is recorded in detail. In Jia Sixie's words, it is "starting from a yeoman, and finally removing sugar, the capital industry is endless", which specifically involves handicrafts such as agronomy, forestry, gardening, animal husbandry, fish farming, and processing of agricultural and sideline products. The preface of Qi Yao Min Shu is the general outline of the book, which explains the reasons and intentions of writing. The text is 10, and the first three volumes are about the cultivation of field crops and vegetables; Volumes 4 to 5 talk about fruit trees and trees; The sixth book talks about animal breeding; Books 7 to 9 talk about sideline business, including wine making, food processing, vegetarian recipes and stationery; 10 mainly describes the plant resources in southern China.

The contribution of Qi Yao Min Shu to agricultural science and technology in China is mainly manifested in the following aspects.

First, a relatively complete agricultural science system has been established, covering all aspects of agricultural production, and practical agronomy categories and their proportions in agricultural production have been reasonably divided.

Secondly, the key of agricultural technology in the middle and lower reaches of the Yellow River was revealed brilliantly, the problem of drought resistance and moisture conservation was discussed in detail, and crop cultivation and farmland management were standardized.

Thirdly, many observation data of plant growth and development and related agricultural techniques were recorded.

Fourthly, many ancient agricultural books, such as The Book of Fan Sheng Zhi, and many lost ancient books were preserved, which provided important historical materials for future generations.

Fifthly, the book discusses the word of raising poultry and livestock, which greatly promotes animal raising technology.

Sixth, the technology of processing, brewing, storage and cooking of agricultural products is described, which is very comprehensive. To sum up, The Book of Qi Yaomin embodies the infinite wisdom of the ancient working people in China, and has made great contributions to preserving valuable experience and promoting the development of ancient agricultural production in China. It is an excellent book summarizing the experience of agricultural production in ancient China and an "agricultural encyclopedia" with high-tech value.