Factory pig farming is an important part of the modernization of animal husbandry and the inevitable trend of the development of pig industry in China. The pig industry in China is facing the outstanding problems of low productivity level, low health management level, low utilization rate of intelligent equipment and high breeding cost. In this paper, we analyzed the research and development status of technology and equipment in the construction of intelligent pig factory from four aspects: Pig welfare and healthy breeding technology, pig house air purification technology, pig growth and health perception technology, pig precision feeding and breeding robot, and looked forward to the key direction of intelligent pig factory construction, so as to provide a reference for the creation of intelligent pig factory in China.