There are four major railway stations in Beijing, namly, Beijing Railway Station (oldest one), Beijing South Railway Station (bullet trains), Beijing West Railway Station (to Xian) and Beijing North Railway Station (to Badaling Great Wall). If you take a train to get to Beijing or you are leaving from Beijing by train, you should make sure you are on the right train station.
Beijing Railway Station
Add: Beijing Zhan Jie, Dongcheng District (centrally located just south of Beijing International Hotel)
The trains departing from Beijing Railway Station: Harbin, Shenyang, Dalian, Qingdao, Jinan, Shanghai, Nanjing Hangzhou and other cities as well as for Inner and Outer Mongolia departing from this station. The remainder depart from Beijing West Station and Beijing South Station. Some international lines (namely the railway line linking Beijing to Pyongyang, North Korea (DPRK), amongst others), also depart from this station.
Beijing West Railway Station
Add: Lianhuachi Donglu, Fengtai District
The trains departing from Beijing West Railway Station: Xian, Chongqing, Chengdu, Lhasa, Urumqi, Guangzhou and Kowloon.
Beijing South Railway Station
Add: Yongdingmenwai Dajie, Chongwen District (The new Beijing South Station, reportedly the largest in Asia)
The trains departing from Beijing South Railway Station: serving as the terminus for high-speed trains to the city - Tianjin, Jinan, Shanghai, Qingdao and other cities, which which can reach speeds above 350 km/h.
Beijing North Railway Station
Add: Xizhimen, Xicheng District
The trains departing from Beijing North Railway Station: offering regular intercity train services to the north and northwest, including the Huhhot-Manzhouli Grasslands Express (K274/K275/K277). It is also the southern terminus for the S2 Line of from the down Beijing to Badaling Great Wall and to Yanqing.