Fennel root boiled in water can assist in the treatment of tinnitus. Fennel root is a kind of traditional Chinese medicine, its flavor is pungent, sweet, warm, has the effect of warming the kidneys, and can harmonize and regulate the qi, in addition to analgesic and insecticidal effect; fennel root on tinnitus, rheumatism and paralysis, the stomach cold caused by vomiting, abdominal pain and other diseases have an improvement, it is also used in the treatment of ascariasis and other diseases. From its efficacy and action, fennel root can treat tinnitus, but it should be combined with other drugs under the guidance of a doctor for comprehensive treatment. The adverse reactions and contraindications of fennel root are not clear. Be careful to avoid spicy and stimulating food. When treating with fennel root, be sure to consult a professional Chinese medicine practitioner to identify and guide the use of medication, do not use medication arbitrarily.