The invention relates to an agricultural ecological environment information management and monitoring method and a system based on Internet of Things, big data and cloud computing, which belong to the technical field of computers and network. The method and the system comprehensively use the Internet of Things, the big data, the cloud computing and an electronic data preservation technology, the agricultural ecological environment information is managed and monitored, and through a sensor, a cloud computing platform and the like, the agricultural production process is monitored in real time, remote diagnosis and early warning are carried out, and an agricultural automatic device is remotely controlled to complete related work. The system comprises an agricultural ecological environment information acquisition and transmission module, an agricultural ecological environment information safety storage module, an agricultural ecological environment information analysis and application module and an agricultural facility remote control module. Through the system of the invention, high-efficiency factory farm can be realized, the modern technology and the management level of the agriculture can be improved, and as the electronic data preservation technology is used, the agricultural ecological environment information reliability can be ensured, and the agricultural ecological environment information effective use can be ensured.