Foamy urine is not necessarily uremia. Uremia is the end stage of acute and chronic renal failure, renal excretory and metabolic function is severely impaired, can not fully discharge the body’s metabolic waste and water, mainly manifested as oliguria or anuria, may cause electrolyte and acid-base balance imbalance, water-sodium retention, uremic encephalopathy, cardiac failure, shortness of breath, shortness of breath and other symptoms of the whole body system. Foamy urine is caused by many reasons, which may be caused by physiological reasons such as concentration of urine due to drinking too little water, excessive urgency of urination due to prolonged holding of urine, etc.; it can also be seen in glomerulonephritis, diabetic nephropathy, nephrotic syndrome and other pathologic reasons. Patients with uremia have a variety of clinical manifestations and may have symptoms of foamy urine. However, it cannot be said that foamy urine is uremia. Foam in the urine may also have other reasons, it is recommended to go to the regular hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.