西汉景帝三年吴王刘濞起兵叛汉后,枚乘曾劝其罢兵,谏词中有“汉并二十四郡,十七诸侯”一语,明确反映出当时的郡国格局,是研究西汉早期政区地理的重要史料。对于“二十四郡”的时代及郡目,近世以来学者多有考证,而所得结论不尽相同。全祖望认为二十四郡为景帝三年之汉郡数,但所考郡目多有错误;王国维认为二十四郡为文、景间政区,谭其骧、周振鹤则认为是文帝后期政区,而三家所确定之郡目亦有分歧;近年,王勇对 Western King King Emperor three years after the rebellion of the Han emperor Liu Qi, rebels, Admiralty advised him to stop the soldiers, there are “Han and twenty-four counties, seventeen princes,” a phrase clearly reflects the then pattern of the country , Is an important historical data for studying the geography of early Western Han Dynasty. For the “twenty-four counties” era and county head, more scholars in the modern research, and the conclusions are not the same. According to Quanzong, twenty-four counties were Emperor Han’s counties in King Emperor’s three years, but there were many mistakes in the counties; Wang Guowei believed that twenty-four counties were civilians, District, and the three identified the county also have differences; in recent years, Wang Yong right