Materials written on bamboo slips is of great importance for the study of all things of the Han Dynasty (B.C. 206-A.D. 220), including the study of mathematics and its application. Great amount of bamboo slips of Han, which had been unearthed since 1930s, provide a lot of practical cases and problems. Detail studies on them is of great help for understudying the development of mathematics in Han dynasty.

The author of the present paper published a paper titled ‘The Practical Mathematics in the Records of Frontier Military Activities in Han Dynasty’ in 1989, studying some of the mathematical problems recorded in bamboo slips. Then the author studied the general mathematical materials in bamboo slips and wooden tablets in the first volume of the ‘Great Series of the History of Chinese Mathematics’ which was published in 1998. A great amount of new bamboo slips are discovered or published in last decade years. New study, therefore, becomes necessary.

In the present paper, we will continue the study of mathematical problems in military affairs of Han Dynasty. Based on our formal study and some new materials, we will discuss how mathematics was applied in military administration and what the importance was in military affairs in Han dynasty.