Abstract: In the ‘double-chain’ eco-agriculture demonstra tion district, the model of ‘company+demonstration base+farm households’ is ad opted as the operating system in the production and marketing of harmless agricu ltural production. The changes of production characteristics and the benefits of the farming systems after the farm households adopted the model and the model types of farm households^, decision making are analyzed. Among the various factors influencing the farm households to make decision, the operation or management performance of the company and its services are the most important factors.