As of my last knowledge update in January 2022, the China National Tourism Administration (CNTA) is the government agency responsible for the planning, development, and regulation of the tourism industry in China. It operates under the State Council of the People's Republic of China and plays a key role in formulating and implementing tourism policies and strategies at the national level.

Key Functions and Responsibilities of CNTA:

1. Policy Formulation: CNTA is involved in the development and formulation of policies and regulations related to the tourism industry. This includes strategies for promoting domestic and international tourism, enhancing tourism infrastructure, and ensuring sustainable development.
2. Regulation and Oversight: CNTA oversees and regulates various aspects of the tourism industry to ensure compliance with standards and guidelines. This involves monitoring tourism services, travel agencies, and accommodation facilities to maintain quality and safety.
3. Promotion of Tourism: CNTA is responsible for promoting tourism within China and internationally. This includes marketing campaigns, promotional events, and initiatives to attract visitors to different regions of the country.
4. Development of Tourism Infrastructure: The agency is involved in planning and implementing projects related to tourism infrastructure, such as the construction of transportation networks, accommodation facilities, and tourist attractions.
5. International Cooperation: CNTA engages in international cooperation and collaboration to promote China as a tourist destination. This involves partnerships with foreign tourism boards, organizations, and participation in international tourism events.
6. Research and Data Collection: CNTA conducts research on tourism trends, market demands, and visitor demographics. The agency collects and analyzes data to inform policy decisions and support the sustainable growth of the tourism sector.
7. Crisis Management: In times of crises or emergencies affecting the tourism industry, CNTA plays a role in coordinating responses and implementing measures to mitigate the impact on the sector.

Please note that there may have been developments or changes in the responsibilities or structure of CNTA since my last update. For the most current and accurate information, it is recommended to check the official website of the China National Tourism Administration or contact relevant government authorities in China.