The efficacy of hippocampus is to tonify the kidney, strengthen the yang (the effect of tonifying the kidney yang), eliminate swelling and dissipate knots; it is used to treat kidney yang deficiency, impediment in the abdomen (tangible or intangible lumps appearing in the abdomen, with a feeling of distension), carbuncle and furuncle (sores mostly occurring in the limbs or the face, with the shape of a small root and deep, as hard as nails), etc.; contraindications are forbidden to those who have a deficiency of Yin and hyperactivity of Yang (Yin fluid deficiency and hyperactivity of Yang Qi), as well as to pregnant women. Hippocampus is warm, sweet, salty, into the liver, kidney meridian, has the effect of tonifying the kidney and yang, dispersing knot swelling, used to treat kidney impotence, urination, kidney deficiency for asthma, obstruction of the masses, bruises; external treatment of carbuncle boils and other symptoms; However, pregnant women and patients with yin deficiency and hyperactivity should be prohibited from using hippocampus; pay attention to not eat spicy and stimulating food during the period of taking the medicine; its adverse effects are not clear for the time being. Hippocampus needs to be used under the guidance of a professional Chinese medicine practitioner, do not use blindly.