Abstract: The EXchange FORmat (EXFOR) experimental nuclear reaction database and the retrieval system provide access to the wealth of low- and intermediate-energy nuclear reaction physics data, and become the most comprehensive compilation of experimental nuclear reaction data. Currently, there are 13 participants (nuclear data centers) of the International Network of Nuclear Reaction Data Centers(NRDC) which has been organized under the auspices of the International Atomic Energy Agency(IAEA) to coordinate the collection, compilation, and dissemination of nuclear data on an international scale. As the participant of NRDC, China Nuclear Data Center(CNDC) does its best for measurement of nuclear reaction quantities induced by neutron and charged-particle and research on the technique of database construction. The formation, development and current situation of EXFOR library, and its format, compilation and retrieval system were introduced. The work on compilation of experimental nuclear reaction data and study of the database construction technique in China was briefly summarized, such as scanning Chinese journals, compiling EXFOR entries, developing software, providing nuclear data service in China, collaborating with NRDC and so on.