Abstract: With progress of modern agricultural technology, light source technology, automatic control technology, and development of urbanization processes, plant factory has been rapidly developed and applied．As an advanced form of modern facility agriculture development, plant factory realized continuous, adjustable, and controllable agricultural production throughout year, changed traditional production mode, and achieved comprehensive innovation in agricultural production．Although plant factory become a research hot spot, there are still lots of issues to restrict its application and promotion．Aiming at major issues of plant factory, reviewing current research status from three aspects of light, temperature and humidity, and carbon dioxide to point out high energy cost, uncoordinated temperature and humidity, and inharmonious carbon dioxide regulation．Proposals were made to study efficient artificial light source technology, temperature and humidity coordinated control technology, carbon dioxide regulation technology, to prospect and trend of China's plant factory technology development, and to indicate direction of future development of plant factory intelligentization combined with current situation of China's production．