| Guojia Tushuguan (National Library) | |
| Native Name: | 国家图书馆 |
| Native Name Lang: | zh-Hans |
| Symbol Location: | beijing |
| Symbol: | subway |
| Address: | Zhongguancun South Street |
| Borough: | Haidian District, Beijing |
| Country: | China |
| Map Type: | Beijing |
| Operator: | Beijing MTR Corporation Limited (Lines 4 and 16) Beijing Mass Transit Railway Operation Corporation Limited (Line 9) |
| Line: |
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| Platforms: | 6 (3 island platforms) |
| Tracks: | 6 |
| Structure: | Underground |
| Accessible: | Yes |
| Opened: | (Line 4) (Line 9) (Line 16)[1] |
Guojia Tushuguan (National Library) Station, also known as National Library station or Guojiɑ Tushuguɑn Zhɑn) is an interchange station on Line 4, Line 9 and Line 16 of the Beijing Subway. Its name is derived from the nearby National Library of China. The station features a double-island interchange layout, with Line 4 trains on the outside and Line 9 trains on the inside, which allows most riders to change lines simply by crossing the platform, instead of walking between levels. This configuration is known as cross-platform interchange.[2] The station handles 106,000 transfers between Lines 4 and 9 per day.[3] The platform for Line 16 is built under the Line 4 and Line 9 platform.[4] If the through service of Fangshan line to Line 9 is counted, which started on January 18, 2023, this would be the first four-line interchange on the Beijing Subway.
The line 4 and 9 stations have underground dual-island platforms with cross-platform interchange. On one side, southbound line 4 trains to Tiangongyuan interchange with originating line 9 and weekday peak Fangshan line (through service) trains heading towards Guogongzhuang and Yancundong, whilst on the other, terminating line 9 and weekday peak Fangshan line (through service) trains interchange with northbound line 4 trains heading towards Anheqiao North. The line 16 station has a separate underground island platform.
There are 6 exits, lettered A, B, C, D, E and F. Exits D and F are accessible via elevators.