A thin pulse is a term used in Chinese medicine that refers to the feeling that the patient’s pulse is much thinner than normal during pulse taking, like a thread, which mostly indicates that the patient has organ deficiency or qi and blood deficiency, mainly seen in deficiency evidence. Clinically, a patient’s thin pulse can be accompanied by other symptoms, such as distress, insomnia, dizziness, chest tightness, panic, rotating vision, hair loss, as well as pale, lusterless face, excessive thinness, difficulty in passing stools, and a series of other symptoms, which can be accompanied by low menstrual flow and amenorrhea in women. Thin pulse is usually seen in elderly patients who are weak, post-surgical patients, bedridden patients and so on. Clinically, the thin pulse can be effectively treated with Chinese herbal formulas, such as the application of Bazhen Tang and the application of Tonic Zhong Yi Qi Pill.