1.Key points of evidence Postpartum arthralgia is mostly a symptom of the same disease and a mixture of deficiency and reality in clinical practice. When a woman gives birth, her vital energy is damaged, or she loses too much blood, which can lead to deficiency of both qi and blood, and failure to consolidate the punching point; and during childbirth, due to labor force, sweating and birth trauma, blood and fluid will be lost and injured, leading to the death of yin and blood, deficiency of yang, and other diseases; the trauma of childbirth, the veins and ligaments are damaged, and blood overflows outside the veins, leaving the meridians into stasis. Because of the postpartum vital energy, blood and fluid are injured, the coup is loose, the so-called “after the birth of a hundred sections empty”, so a little careless life or proper regulation, it is easy to feel the external evil and the development of this disease. Therefore, the pathological characteristics of “multiple deficiencies and stasis” after childbirth are the basis and internal causes of the disease, while blood deficiency, wind-cold, blood stasis and kidney deficiency are the main pathogenic factors. Prof. Wang observed that these pathogenic factors are often intermingled and seldom occur separately, among which blood deficiency is the main cause of deficiency, while wind is the main cause of external sensation, which can be accompanied by blood stasis and kidney deficiency. This is the “JingXiNanBao – postpartum stroke formula” pointed out: “postpartum stroke, by the birth injury moved blood, strain damage to the internal organs, not calm recovery, early labor, qi deficiency and the wind evil multiplied”. This disease has various types of evidence of deficiency and mixed manifestations, and with the development of the disease, there may be a mixture of cold and heat. Generally, in the early stage of the disease, blood deficiency is the main cause of wind, cold and dampness, manifesting as superficial coldness. Patients mostly present with postpartum joint pain, unfavorable flexion and extension, or indefinite pain, or severe cold pain, like needles, which is relieved by heat, or swollen joints, numbness, heavy, accompanied by vicious cold and fear of wind, with a light tongue, thin white coating, and moist and thin pulse. In the late stage of the disease, either because the cold in the surface is not resolved, into the heat, or because the blood stasis is blocked inside, and heat is turned into heat over time, there are cold and heat mixed symptoms of cold in the surface and heat, the patient is mostly manifested as postpartum body pain, especially the lower limbs pain, numbness, hardness, heavy, swelling obvious, flexion and extension is unfavorable, calf pressure pain; the amount of malodorous dew is small, purple and dark with blood clots, cold and fever, no sweat, headache and body pain, asthma, irritability, thirst, pulse floating and tight. The key to the pathogenesis of postpartum arthralgia is blood deficiency and wind, blood deficiency, then the limbs and bones are empty, the meridians and joints are not moistened, resulting in limb soreness, pain and numbness; postpartum wind, then the Ying and Wei are out of balance, wind, cold and dampness take advantage of the deficiency and enter the joints and limbs, so that the flow of Qi and blood is not smooth, stasis blocking the meridians and pain, so in the treatment should be to nourish blood and dispel wind as the main method, and at the same time to disperse cold, dampness, eliminate blood stasis, nourish the kidneys, the formula is used Huang Qi The formula uses Huang Qi, Gui Zhi Wu Wu Wu Tang (“Jin Gui Yao”) plus and minus, with remarkable clinical efficacy, such as: Huang Qi, Gui Zhi, Angelica, Fang Feng, Qing Feng Vine, Chicken Blood Vine. Prof. Wang pays attention to the four diagnoses and adds and subtracts according to the evidence and the individual differences of the patient, and adjusts the treatment flexibly. When the symptoms of blood deficiency are obvious, add Bai Shao and Shu Di to nourish blood and invigorate blood; when the symptoms of kidney deficiency are obvious, add Shu Di to nourish kidney and fill essence to nourish blood, add Du Zhong and Niubizi to nourish kidney and strengthen tendons and bones; when the symptoms of blood stasis are obvious, add Chuan Xiong, Tao Ren and Hong Hua to invigorate blood and resolve blood stasis, pass through the channels and relieve pain. In case of cold and dampness on the surface, add and subtract Ephedra with Artemisia; in case of cold on the outside and heat on the inside, add and subtract Da Qing Long Tang; in case of both dampness on the surface and inside, add and subtract Xiao Qing Long Tang; in case of cold and dampness with severe pain, add and subtract Wu Tou Tang; in case of wind and dampness, add and subtract Gui Shao Zhi Mu Tang; in case of dampness, add and subtract Bai Zhu Hui Zi Tang. Professor Wang emphasized that this disease is better treated with herbal medicine, but prevention is also very important. The woman should pay attention to the care of the puerperium, the room should be cold and temperature appropriate, air circulation, sunlight, should not close the door; clothing should be warm and cool to prevent external wind and cold; diet should be light, rich in nutrients and easy to digest; should not eat too much cold, greasy and spicy products to avoid internal injury to the spleen and stomach; should combine work and rest to avoid depletion of heart and blood; mood should be kept relaxed, should not be too much grief and fear and depression to avoid emotional and moral injury. 3.1 Nourishing Blood and dispelling wind throughout Blood deficiency and wind is the key to the development of postpartum arthralgia. When blood is deficient, the limbs and bones are empty, and the meridians and joints are not moistened, resulting in soreness, pain and numbness of the limbs; when wind is affected after childbirth, there is a loss of regulation of the battalion and guard, and wind, cold and dampness take advantage of the deficiency to enter the joints and limbs, resulting in poor flow of qi and blood and painful stasis of the meridians and joints, so the treatment should be to nourish blood and dispel wind throughout, and because women have the characteristic of “more stasis and more deficiency” after childbirth. Therefore, the treatment should be to nourish Blood and dispel wind throughout. Huangqi Gui Zhi Wu Wu Wu Tang was used in the original text of Jin Kui for the treatment of blood paralysis due to deficiency of both qi and blood, but in modern clinical practice, it has been extended to the treatment of coronary heart disease and diabetic peripheral neuropathy. Professor Wang used this formula for the treatment of postpartum arthralgia, because the deficiency of Qi and Blood in women after childbirth and the external exposure to wind and cold cause soreness, numbness and pain in the limbs, which is similar to the evidence of Huangqi Gui Zhi Wu Wu Wu Wu Tang, so this formula can be used to benefit Qi and clear the meridians, and harmonize Ying and clear paralysis. The addition of wind and cold dispersing drugs, such as gutu grass and qingfeng vine, on the basis of this formula can make the wind and dampness go away and achieve the effect of sufficient qi and blood, filling all the veins and clearing the meridians, so that the pain will be removed.