202 1 Ophiopogon japonicus in Caoxian County has poor planting benefit. During the planting period in mid-March, 20021year, due to the low price of Ophiopogon japonicus in the first two years, and the extremely cheap price of Ophiopogon japonicus seedlings, the people in Shandong and Hubei producing areas had very poor enthusiasm for planting, especially in Shandong producing areas, and the people only planted it for next year. After the planting period, the author investigated that the planting area in Shandong production area in 202 1 year was only 20%-30% of the planting area in 2020. Due to the continuous rainy weather from September to October, 20021year in Shandong production area, the planting area of Liriope japonicus was seriously waterlogged, which caused the Liriope japonicus land to be soaked in rain for more than a month. At the beginning of 1 1 month, although the water in the field had receded, the field was soaked by rain and the root system was damaged. As the temperature dropped, Liriope japonicus was damaged.