The total volume of online public opinions over China’s agriculture，rural areas and farmers in 2017 grew significantly. Topics such as rural vitalization strategy，green agriculture development，reform of rural land system and development-oriented poverty alleviation caught extensive public attention. Government department released agriculture-related information and set related agenda in a more proactive manner，and became more scientific and efficient in response to and guidance for public opinions. News media were still essential to public opinions over China’s agriculture，rural areas and farmers，because their communication modes were more vivid and popular. The setting of Weibo/Micro-blog related to agricultural topics highlighted care and support for agriculture，and “short-video” plus “live-show” helped to deliver favorable public opinion effects. Public opinions concerning agriculture，farmers and rural areas on WeChat platforms gained robust momentum，as those platforms gradually became powerful topic makers as well as disseminators. In 2018，the following topics are expected to be hot spots of public opinions：agricultural and rural development topics in the implementation of rural vitalization strategy，invigoration of agriculture by improving its quality，environmental protection and branding amid supply-side structural reform on agriculture，entrepreneurship and innovation during the process of fostering new drivers for agricultural and rural development，development-oriented poverty alleviation as part of efforts to eliminate poverty，and agri-food safety against the backdrop of globalization.