1, the urine foam more, long does not disappear, indicating that the urine excretion of protein more. 2, urine discoloration, strong tea color, wash water, soy sauce color or turbid as rice water, indicating that there may be red blood cells or white blood cells. 3, too much or too little urine, the normal daily urine volume of about 1500 ml, if there is no drinking too little water, sweating, fever, diarrhea and other factors, a sudden decrease in urine volume should be abnormal. Urine volume of more than 2500 milliliters per day, should be examined to clarify whether the kidney and other diseases. 4, increased nocturia, normal people within 60 years of age generally should not have nocturia, if the young people increased nocturia, it is likely to be the early manifestation of renal dysfunction. 5, causing eyelids or face edema after getting up. 6.Fatigue without a clear reason, fatigue, waist and back pain. 7, Increased blood pressure, 5-10% of hypertension is due to kidney lesions. 8, Unexplained anemia, itchy skin, cramps, bleeding gums, etc.