The invention discloses a cloud-based agricultural big data platform, which comprises a system integration platform, an intermediate database and an application integration system, and is characterized in that the system integration platform comprises a digital agricultural on-line data acquisition module, a digital agricultural on-line data control module, a digital agricultural on-line data monitoring module, a digital agricultural on-line data alarm module, a facility digital production system, a digital model and standardized safety production regulations; resource sharing and remote management are provided; the system integration platform selects a WebGIS and configuration animation embedding technology. The agricultural big data platform based on the cloud relates to the application of big data, Internet of Things, Beidou, artificial intelligence and other technical means in the agricultural field, acquires agricultural resource elements, production process and other data in real time, and realizes precision, automation, intelligence and standardization of agricultural production and management; through intelligent analysis and decision-making of agricultural big data, the government can comprehensively grasp agricultural conditions, more efficient and comprehensive support is provided for agricultural development, and the purpose of speaking by using data and making decisions by using data is achieved.