Agricultural informatization is the basis and an important part of informatization of national economy. It is an important means to plan urban and rural areas and promote the development of agricultural economy. The construction of agricultural informatization has always been the top priority of the national work. Internet of Things technology is another information revolution after computer, Internet and mobile communication network. IoT technology applied to the field of facility agriculture, facility agriculture has a broader perspective. Attention and research on the needs of customers for IoT technologies will help IoT technologies to better integrate with the agricultural markets of facilities and achieve win-win results. The Role of Informatization in Agricultural Modernization Information services need to be diversified. Farmers need market information as well as information on new technologies and new achievements. They also need extension workers to help with decision analysis and actual production and management issues. This puts higher demands on the quality of rural extension workers. They not only provide agriculture Technology or achievements, but also to help farmers make scientific decisions and provide technical services that are compatible with the whole process of agricultural production and management to help farmers realize their incomes, affluence and rural comprehensive development. Information services also need personalization. Currently, planting large need seed sources, seed prices, planting environment and other information, and such a large planting has its own individual needs. For ordinary farmers, they have the technology of production management. For example, large growers planting tomatoes have a need for tomato cultivation and production management. Liquidity of information services, low cost requirements. Now pay attention to low-cost agricultural production, agricultural production and distribution of users more scattered, how to provide information services anytime, anywhere low-cost way, then the need for information technology promotion. Each specific agricultural extension activities, content and methods of effective combination is the key to the success of the promotion work, but also affect the efficiency of the promotion of the main factors. Promotion Content × Promotion Method × Audience Acceptance Ability = Promotion effect, from this formula can be seen as the method and content are equally important, only to achieve a reasonable mix in order to achieve the best results. In the process of improving the efficiency of promotion, information technology has changed our lifestyles relatively. The contents of promotion should be digitized and the means of information promoted so as to greatly promote the promotion efficiency. The way of agricultural technology promotion will gradually change farmers' cognition, and from understanding and understanding of adopting new technologies to promote the diffusion of technologies, the whole process needs information technology to support it. In other words, information technology supports the modern agricultural technology extension system. At present, the rural informatization in our country has entered a period of rapid promotion. Since the reform and opening up for 30 years, our country has gradually entered the ranks of low- and middle-income countries from low-income countries. Agricultural and rural areas have been leapfrogged. In 2015, the per capita income in agricultural areas 6977 yuan, equivalent to more than 1,000 US dollars. Former Soviet scholars have suggested that when the average per capita of 1,000 US dollars, the information will show a strong demand. At present, China's agriculture is facing a shortage of resources, ecological deterioration, labor shortage, food safety pressures, the need to substantially increase land productivity, labor productivity and resource utilization. Therefore, there is an urgent need to upgrade traditional agriculture with information technology and equipment technology, to change the mode of development and to raise the level of agricultural modernization. This is an objective requirement of our agriculture.