Perennial rice varieties and their supporting techniques have been applied in production for many years. However, the safe overwintering, green and light simplified cultivation techniques of perennial rice varieties in high-altitude rice areas still need to be explored. Since participating in the perennial rice project led by Hu Fengyi’s team at Yunnan University in 2016, the author has explored a set of green, efficient and safe overwintering production techniques for “perennial rice+fish” in high-altitude (1 670 meters) rice areas, mainly including the selection of perennial rice varieties, seedling cultivation and transplantation, fertilizer and water management, disease and pest control, and fish management in rice fields, as well as the management techniques of rice piles, water, fertilizer and fish in winter, and the management techniques of rice and fish in the following year.