Yin water in Chinese medicine is the diagnostic subtype of edema disease, which is a type of edema caused by dietary exertion, insufficient endowment (bad innate constitution and function), and prolonged illness, with the location of the disease in the spleen and kidneys, and with edema of the waist and legs as the most important. Yin water is deficiency or mixed with deficiency, and Yang water and Yin water can be transformed into each other. Edema in Chinese medicine can be divided into three types according to the identification of Yang water and Yin water, and Yin water and water type. (1) Spleen-Yang Deficiency and Decay: Edema for a long period of time, severe below the waist, not easy to recover from time to time depression, accompanied by distension of the epigastrium and abdomen, reduced diet and loose stools, lack of luster, fatigue (mental exhaustion and physical weakness), and tiredness of the limbs, etc. The patient is recommended to take Real Spleen Drink plus reduction. It is advisable to add or subtract Real Spleen Drink. (2) Kidney-Yang Weakening and Feeble Certificate: recurrent oedema, swelling of the face and body, severe swelling below the waist, sunken in time, accompanied by decreased urine output, cold extremities (cold extremities, even to the elbows and above the knees), palpitation and chest tightness. It is advisable to take Jisheng Kidney Qi Pill combined with Zhenwu Tang plus reduction. (3) Stasis and water stagnation syndrome: the edema is prolonged and persistent, with mild or severe swelling of the limbs and the whole body, with severe swelling of the lower limbs, ecchymosis of the skin and stabbing pain in the waist. It is advisable to take Tao Hong Si Wu Tang combined with Wu Ling San plus reduction. Yin Shui is deficiency or mixed deficiency and reality. Yang Shui can be transformed into Yin Shui when it is prolonged and recurrent, or when it damages the spleen and kidneys. When yin-shui feels external evils again, or when diet is not controlled, the swelling will be aggravated, and the symptoms of yang-shui will be presented, making it a case of deficiency with symptoms of reality. The treatment of edema yin and yin water needs to be under the guidance of a doctor to identify yin and yang, and rational use of medication, do not take medication on your own in order to avoid the wrong medication to avoid the wrong condition.