1, greening. Adding a little green to life is an expert in cleaning dust. 2. eat. Cactus can be used with food. 3, medicinal. The whole plant of cactus can be used as a medicine guide, which can cure gastric and duodenal ulcers, clear away heat, promote diuresis and remove toxic substances by oral administration, and can also cure sores, carbuncles, burns, snake injuries and so on. Fresh cactus mashed for external use can also have a certain therapeutic effect.