The Yellow River Delta locates in the national YellowBlue strategic overlapping zone. It has unused land of 301300hm2. The superior geographical position and abundant reserve land resources provide a good development space for the emergence and development of regional symbiotic economies. Based on various economies in the development and utilization of salinealkali land in the Yellow River Delta, the current situation of the development and utilization of salinealkali land and typical problems existing in the development and utilization of agricultural industry have been analyzed, three cyclic monomers have been constructed, they are agricultural "carbon" cyclic symbiosis mode with the recycling of crop and culture wastes as the core; modern agricultural science and technology information cycling based on network and science and technology, and agricultural capital circulation symbiosis model driven by new agricultural financing channels. Combining with practical cases, the establishment of ecological cycle symbiosis model in the Yellow River Delta based on three recycling units has been constructed in view to gradually form a new agricultural industry model of "recyclable and replicable" in the whole country and promote the healthy development of green industry.