Abstract: Factory agriculture has become strategic direction of agricultural development in the future．Developing factory agriculture is an important way to promote transformation and upgrading of modern agriculture and improve the "three rates" of agriculture．By analyzing patents, development status and research trend of factory agriculture was understood and grasped．PatSnap database was selected as patent data source to analyze technology of factory agriculture．Based on method of bibliometric and visualization, development trend and competition situation of factory agriculture were reviewed from six aspects: patent time series distribution, applicant type, national/regional distribution, applicant institution, inventor and hot technology field．Results indicated that number of factory agricultural technology patents increased year by year．Companies were main body of agricultural industrial technology patent layout, and colleges and research institutes were main groups of basic research．The United States was the country with the largest number of patent applications as well as the largest market for patent distribution．There is still a certain gap between China's factory agriculture and developed countries in terms of core key technologies and output efficiency．Therefore, factory agriculture should be elevated to an important national business form and strategic position, focus on breaking through a group of core key technologies with high external dependence, accelerate industrialization process, and ultimately achieve technology landing．