The National Library of France is divided into two parts: the new library collects books, magazines, audio-visual products and professional materials; The old building treasures manuscripts, prints, photos, atlases, coins, various commemorative medals, performance props and music materials.

The four glass buildings in the library are stacks, which are connected by glass corridors from the bottom. Inside the corridor is a spacious and bright reading room. You can see the green forest from the glass corridor from every reading room. Under the instruction of the computer, the library will deliver the books in the stacks to the readers through dozens of 8-kilometer tracks within 10 minutes. The interior of this magnificent library is criss-crossed without gates and walls. Because of the large building, it is normal for the staff not to know. According to the staff, the library has 5,600 doors and17,000 keys, which are managed by four full-time staff, setting a record for the library. Therefore, it is a well-deserved giant of the library. In the combination of indoor space, many places have adopted advanced breathable steel wire textile walls to make the air circulate. Due to the extensive use of glass and toughened materials, a lot of reflected light is generated, but these cool colors reflected from toughened walls seem to reflect each other with the warm colors opposite to the ubiquitous wood-colored wood materials and crimson carpets, thus realizing the light coordination of these materials.