The efficacy of ivy is to dispel wind and dampness, dredge the liver and relieve depression, invigorate the blood and meridians, detoxify and reduce swelling. In clinical practice, the effects of ivy are mainly reflected in: First, it can treat joint pain caused by rheumatism and rheumatoid rheumatism, numbness in the limbs, and even paralysis after stroke as well as dizziness and red eyes, and it can treat suffocation in the anterior chest area caused by coronary heart disease, as well as nose bleeding. Second, women can treat irregular menstruation. Third, it can treat trauma and bruises, as well as skin diseases carbuncles, swellings, boils and ringworm. Fourth, it is also useful for sore throat of external sensation. Fifth, some traumatic injuries, such as snake or dog bites, can also be treated with periwinkle. The common way is decoction or topical application.