The active utilization and inheritance of agricultural heritage cannot be separated from the support of relevant government policies. This study combined the bibliometric method and content analysis method to analyze the agricultural heritage protection and development policies based on the government's 410 agricultural heritage official documents and constructed a six-dimensional analysis framework of document release form, release subject, release quantity, document relevance, document type, and document content. The results show that the form and subject of document release are diversified; the number of documents released has an approximate inverted “U”-type characteristic; the number of documents formulated specifically for agricultural heritage is relatively small (21.46%); and information documents and guidance documents are more favored by the government than incentive documents. The discussion of the document content demonstrates that the excavation and application of agricultural heritage are worthy of further improvement; the economic value is widely used in the multifunctional utilization of agricultural heritage; and farmers, enterprises, scientific research institutions, and governments are all crucial participants in the management of agricultural heritage. Some problems remain in the government's management of agricultural heritage, such as producing too few targeted documents and the insufficient coverage of the documents that have been produced thus far.