Fuente: Wipo "BigData" The invention relates to the technical field of big data supervision, in particular to a supervision system and method based on big data marketing, and the supervision method comprises the steps: carrying out the data supervision initial classification of marketing data through constructing a big data marketing supervision platform; performing secondary data supervision on the marketing data according to a data primary classification result; generating a marketing supervision report based on the supervision result; according to the invention, multi-level supervision is carried out on the data in the big data marketing process, so that the security of personal privacy data is ensured; the credibility score in the data source identifier is dynamically updated by using a block chain technology, and integrity and sparsity check is performed on the data to ensure the accuracy and integrity of the data in the collection, storage and transmission processes; through data compliance deep supervision and marketing data relevance supervision, malicious promotion data is identified and deleted, big data monopoly is prevented, and fair competition of small and medium-sized enterprises in the market is guaranteed.