Where the state stipulates that pigs cannot be raised.

Legal analysis: 1, drinking water source protection areas, scenic spots, core areas and buffer areas of nature reserves. 2. densely populated areas such as residential areas, cultural, educational and scientific research areas and medical areas in cities and towns. 3, the people's government at the county level shall delimit the forbidden area. 4. Other areas requiring special protection as stipulated by national or local laws and regulations.

Legal basis: Law of People's Republic of China (PRC) on Environmental Protection Article 1 This Law is formulated for the purpose of protecting and improving the environment, preventing and controlling pollution and other public hazards, safeguarding public health, promoting the construction of ecological civilization and promoting sustainable economic and social development.