Juxian was once the capital of Juguo during the Spring and Autumn Period and the Warring States Period. According to the new evidence inferred by relevant historical archaeologists, in history, with the change of Ju 'an, the capital has moved to a new location many times. First of all, in the Shang Dynasty, Du Jun moved to Ganyu, Jiangsu, and then moved back to Di Jun in the Western Zhou Dynasty. Di Jun was originally the Dawenkou Cultural City of Lingyang River, and later it was Duanjiahe Longshan City. Another way of saying it is that the capital of Juan was first introduced into China (now southwest of jiaozhou city) and then moved to Juan. There is also a saying that there were three capitals in the Spring and Autumn Period, namely Cheng Ju, Quqiu and Luanyuan. Cheng Ju is now the county seat; Quqiu is in the south of Junan, which is in the west of Ganyu County, Jiangsu Province. Yunxian County, located in Dongguan Town in the north, is the direct site of Yuanjiazhuang in the Eastern Zhou Dynasty. Although these statements are not completely unified, their evolution clues are basically clear, which should be known to contemporary Juguo people and the world.

During the Spring and Autumn Period, Juguo owned a large area of land in the southeast of Shandong, and its territory was from the north to the southeast of Changyi. It reaches Ganyu County in Jiangsu Province in the south (autumn and Hebei), Yishui County in the west (cloud) and the sea in the east. From the northeast to jiaozhou city (also called Jiegen), the northwest is now the southeast of Linqu County, and the southwest is not as good as Feixian and Linyi. Today, Juxian County, Donggang District, Lanshan Office, Wulian, Zhucheng, Anqiu, Jiaonan, Yishui, Yinan, Junan and Linshu all belong to Juzi. It is also said that at its peak, Juxian's territory expanded to all parts of Juxian, Donggang District, Lanshan and Junan, as well as parts of Yishui, Yinan, Feixian, Linyi, Tancheng, Cangshan, Jiaozhou, Wulian, Gaomi, Zhucheng, Anqiu and Linqu, as well as parts of Ganyu County in Jiangsu Province. With the rise and fall of the national situation, the territory of Ju State has been expanded and reduced from time to time. Residence is either a vassal state, a kingdom or a county, state or county, which has lasted for more than three thousand years.