Foamy urine is medically known as proteinuria. Proteinuria in women may be caused by physiological factors such as strenuous exercise, consuming too much high-protein food, or it may be caused by chronic nephritis, diabetes and other diseases. 1. Physiological factors: if strenuous exercise, or fever, and eat too many eggs, fat meat, milk and other high-protein foods, may trigger women to proteinuria. 2. Chronic nephritis: Chronic nephritis can be caused by bacterial infections, immune disorders, metabolic, genetic and other factors, and patients may experience proteinuria, hematuria, edema and hypertension. 3. Diabetes: the cause of diabetes is affected by genetic factors, living environment and lifestyle habits, etc. Patients may experience symptoms such as excessive drinking, excessive urination, excessive eating, weight loss and proteinuria. The causes of foamy urine in women are many, after excluding physiological factors, it is recommended that the patient go to a regular hospital for a relevant examination to clarify the cause of the disease under the guidance of the doctor’s treatment.