A weak ulnar pulse in the left hand is usually caused by a deficiency of kidney yang (deficiency of yang energy in the kidneys) and a deficiency of both qi and blood. The pulse of a weak pulse is dull, thin, weak and soft, and can only be obtained by heavy pressing, but not by light lifting. The main symptom is deficiency of yang qi, qi and blood. According to the theory of the internal organs, the left ulna represents the internal organs of the kidneys, including the umbilicus to the foot below the disease. Therefore, the left ulnar pulse is weak in the main kidney yang deficiency, deficiency of qi and blood, and inability to lift. Patients mainly show symptoms such as fatigue and laziness, shortness of breath, fear of cold, long and clear urine, loose and unformed stools, increased frequency, pain in the lower back, aggravated by cold, like warmth and like to be pressed and so on. The principle of Chinese medicine treatment is to warm and replenish kidney yang (warming and replenishing kidney yang), and to benefit qi and nourish blood (replenishing qi and blood in the body). In Chinese patent medicines, medicines such as Gui Fu Di Huang Wan, Kidney Qi Pill and Shiquan Da Tian Tang can be used. If you have any of the above symptoms, it is recommended to consult your doctor for scientific treatment under his guidance.