Abstract: Construction of agricultural internet of things（IOT）demonstration area was carried out for many years in our country.At present，a number of networking hardware and software products，typical applications and technology models based on agricultural IOT were formed，agriculture IOT support platform with international advanced level was built in part of region，and remarkable social benefits and economic benefits from the surface were achieved.But quantitative analysis of benefits and investment feasibility of agricultural IOT was lack，and not quantified on well-defined economic indicators.Based on IOT application model analysis，quantitative analysis was conducted on influencing factors of cost saving and increasing efficiency，a complete analysis method of agricultural IOT application was formed.General rules of cost saving and increasing efficiency by IOT were explored.It could provide quantitative analysis basis for application decision of IOT.