The invention discloses a crop rotation, intercropping and relay intercropping cultivation method for relieving continuous cropping obstacles of konjac. According to the method, a crop rotation, intercropping and relay intercropping cultivation technology is integrated into a konjac planting system, and the konjac and green manure are subjected to crop rotation, so that the land utilization efficiency can be improved, the physical and chemical properties of soil can be improved, the soil fertility can be adjusted, and the continuous cropping diseases of the konjac can be effectively blocked; the konjac and high-stalk crops are intercropped, so that land, water, light and heat resources are fully utilized, and the high-stalk crops provide shading protection for the konjac; the konjac is subjected to relay intercropping to cover plants, and vegetation with proper density and height is rapidly formed on ridges, so that the growth of field weeds is inhibited, the earth surface temperaturein a high-temperature period is reduced, the soil moisture is kept, the diversity of soil organisms is increased, beneficial soil biological communities are promoted, and the growth and proliferationof harmful pathogenic bacteria of soft rot and southern blight are inhibited; and meanwhile, the crop rotation, intercropping and relay intercropping cultivation system interferes with the identification, positioning and damage of pests to the konjac, so that the survival of natural enemies is facilitated, the field pests are inhibited and killed, wounds caused by the pests on stems and leaves ofkonjac plants are reduced, the probability that the konjac is infected by the pathogenic bacteria is reduced, chemical herbicides, bactericides and insecticides do not need to be applied in the growthperiod of the konjac, the green, efficient and sustainable development of the konjac planting industry and the quality safety of konjac products are guaranteed, the konjac industry is greatly promoted, and the comprehensive and rapid development of economy and society in Shaanxi-Sichuan and Yunnan-Guizhou mountainous areas is promoted.