Efficacy and Safety of Saussurea Involucrata Liquid Tonic in Patient With Postpartum Rheumatism

Inclusion Criteria: * Women experience joint and muscle pain, soreness, heaviness, numbness, etc. within 1 year after childbirth, miscarriage or induction of labor; with or without sensitivity to external stimuli such as wind, cold, moisture, etc., which may be induced or aggravated by emotional fluctuations * Meets the diagnostic criteria for Yang Qi deficiency and cold-dampness syndrome. * Age 18-50 * Pain VAS score ≥4cm Exclusion Criteria: * Those in the puerperium (within 42 days after delivery). * Those who have rheumatoid arthritis, ankylosing spondylitis, osteitis density, polymyalgia rheumatica, reactive arthritis, myofasciitis, fibromyalgia syndrome and other rheumatic immune diseases before pregnancy. * Severe abnormalities in blood routine and electrocardiogram, active liver disease or abnormal liver function, AST, ALT or GGT higher than 1.2 times the upper limit of normal value; abnormal renal function, serum creatinine (sCr) higher than 1.2 times the upper limit of normal value. Patients whose white blood cell count \< 3.0×109/L, or hemoglobin \< 90 g/L, or platelet count \< 100.0×109/L in routine blood examination * Combined with serious underlying diseases, primary diseases and postpartum diseases, such as uncontrollable hypertension, heart disease, kidney disease, puerperal fever, mastitis, moderate to severe postpartum depression diagnosed by a psychiatric department, etc. * Those who have a history of using glucocorticoids, immunosuppressants and other drugs within 4 weeks. * Those who are allergic to the ingredients of the test drug or have a high-sensitivity constitution. * Existing or past history of cancer. * Those who have participated in other clinical drug studies in the past 2 months. * Those who do not use the medication as prescribed, or who have incomplete information that affects the judgment of efficacy.