唐朝以长安为都城 ,以洛阳为陪都 ,由于其位于长安以东 ,故又称东都。所谓分司官 ,就是指在陪都另行设置的一套中央职官体系。早在西周时 ,洛阳就已经是陪都了 ,当时是否设有分司机构及官员 ,史籍中没有明确记载。新莽统治时期仍然将洛阳作为陪都 ,王莽曾说 :“昔周二后受命 ,? The Tang Dynasty Chang’an for the capital to Luoyang as capital, because of its location east of Chang’an, it is also known as the East. The so-called sub-bureaucrats, refers to the capital set separately in a set of central government officials system. As early as the Western Zhou Dynasty, Luoyang had already been escorting the capital. At that time, whether there were any branch offices and officials in the history books was not clearly documented. During the reign of Xin Mang, Luoyang was still used as a capital capital. Wang Mang once said: "After Tuesday, was it ordered?