As a fundamental industry in the development of China’s national economy, agriculture has a vital impact on the basic living and production. Modern agricultural production pursues the most agricultural production value with as low cost as possible to achieve intensive and technology-based agricultural production. With the continuous improvement of agricultural production technology, the "Internet + Agriculture" development model meets the current needs of agricultural production. To achieve innovative development of agricultural production and management, information technology has become the focus of agricultural development in China. Based on the author’s study and practical experience, this paper first outlined the modern agriculture in the era of "Internet Plus" and then analyzed the importance of modern agricultural informatization in the era of "Internet Plus". Finally, the author proposed development ideas of modern agriculture in this era.