It can nourish blood and calm nerves, dispel wind and dredge collaterals. Polygonum multiflorum Thunb., also known as tuber, has a sweet taste and can enter the heart and liver meridians. Its efficacy and function are to nourish blood, calm nerves, dispel wind and dredge collaterals. Clinically, it can be used for the following groups: 1. Insomnia and dreaminess; 2. Pain due to blood deficiency: various pains caused by insufficient qi and blood; 3. Rheumatic arthralgia: all kinds of joint pain, such as rheumatic arthritis, rheumatoid arthritis, bone degenerative disease, waist and leg pain can be used; 4. Skin rubella: Rubella, urticaria, eczema, and itch of scabies can be used, with good clinical effect. The suitable crowd is the doctor's choice according to the condition of the patient, and can't use it without authorization. Generally, traditional Chinese medicine is believed to have some side effects, so it is necessary to consult a professional doctor or pharmacist for use.