Abstract: Precise variable rate pesticide application technology has the advantages of improving pesticide utilization, reducing pesticide residues and improving environmental pollution. It is an important direction for the development of smart agriculture in the future. Precise variable application technology has attracted extensive attention because of its accuracy, low amount and high efficiency. However, there are still some problems, such as inaccurate target identification, low disease identification rate and poor environmental adaptability. This paper discusses the variable application mode and application status of precise variable application technology, and gives some development suggestions.