Cistanche is a plant that grows in the desert and has high medicinal value. It is sweet, salty and warm in nature, and has the effect of tonifying the kidneys and strengthening the yang, laxative and laxative. It is mainly used in Chinese medicine clinics for the treatment of impotence, spermatorrhea, infertility and constipation. However, for some people with symptoms such as internal fire, frequent diarrhea, premature ejaculation, etc., the herb should not be eaten: 1. People with internal fire: refers to excessive heat and excess heat in the body, often appearing heartburn, dryness, mouth and tongue, dry red eyes, constipation and other clinical manifestations. In Chinese medicine, the use of Cistanches should be avoided for such people to avoid its tonic effect, making the internal fire more exuberant and aggravating the above symptoms; 2. People with frequent diarrhea: Since Cistanches can laxative, it should be reduced or avoided for people with frequent diarrhea to avoid further aggravation of diarrhea symptoms; 3. People with premature ejaculation: In Chinese medicine texts, people with strong yang and easy to rise but semen is not solid, mostly referring to premature ejaculation People, generally avoid using Cistanche. This is because this medicine has the effect of tonifying the kidneys and strengthening the yang, which may lead to the premature ejaculation people with stronger kidney yang, more serious imbalance between yin and yang and other adverse consequences. In addition to the above three common contraindications, this medicine is also not recommended for underage children, menstruating women, pregnant women, and people with hot and humid bodies, so before using the medicine, you should consult a professional physician and ask in detail whether it is suitable for you to take it.