Abstract: To explore the new two crops a year rotation cultivation model of konjac with winter crops such as fritillaria, the author studied the growth period, yield, diseases and insect pests, economic benefit and cultivation physiology. The results showed that, growing period of the two crops could be completed in one year, yield was 12377.85 kg/hm² and benefit was 61889.25 yuan/hm² by single cropping, yield of konjac and fritillaria were 12489.00 kg/hm², 8889.00 kg/hm² respectively by rotation, total benefits were 151335.00 yuan/hm². Compared with the control, there was no significant difference in disease, increase rate of konjac yield was 0.89% , although pests increased 1.92% and the comprehensive benefit increased 107.66% . Meanwhile, physiological problems of konjac planting rhizomes was reported firstly, the important relationship was discovered between growth period and safe storage, the growth period of 184 days or longer was the basic guarantee condition for the physiological maturity. The new cultivation model could solve the problem of less tillage land in mountains, overexploitation of wild resources, and achieve both biodiversity conservation and economic benefits.