Kidney yang deficiency also fire is due to the deficiency of kidney yang, resulting in cold and cold air and the formation of false fire and restlessness caused by the position. Kidney yang deficiency refers to the lack of kidney yang qi, the body loses warmth and the main manifestation of cold symptoms. Common clinical symptoms include impotence and premature ejaculation in men, infertility with uterine cold in women, lumbar and knee weakness (a feeling of soreness and weakness in the lumbar and knee regions), lack of warmth in the limbs, and long and clear urination. Normally Kidney-Yang deficiency does not present with fire. However, since patients with Kidney-Yang deficiency will show deficiency of Kidney Yang Qi and deficiency, when forced by cold and cold qi, it will make it float upward to form a deficiency fire, which cannot go downward in the body and manifests the condition of fire. Generally speaking, patients with kidney yang deficiency and fire should go to the hospital in a timely manner to avoid aggravating the condition with the development. Daily diet should also pay extra attention to minimize cold, spicy, stimulating food, so as not to aggravate the condition.