The normal pH of urine is 4.6-8.0, so urine pH 5.0 is within the normal range of low, do not worry excessively. Usually, low urine pH may be related to non-disease factors such as diet and drugs, but also related to disease factors such as diabetes, gout and chronic glomerulonephritis, specifically including the following: a. Non-disease factors, if you eat a lot of meat and protein, the decomposition of protein can produce acidic substances, which can make urine acidic and lead to low pH. In addition, when taking acidic drugs such as ammonium chloride, the urine will also be acidic, which can also make the urine pH low. In these cases, urine pH can gradually return to normal after adjusting diet or stopping medication. 2.Disease factor 1.Diabetes mellitus: In addition to lower urine pH, the patient will also have elevated blood sugar and symptoms such as drinking, urinating, eating more and losing weight, etc. If such performance occurs, the patient should go to regular medical treatment to test blood sugar, take oral hypoglycemic drugs or apply insulin as prescribed by the doctor to control blood sugar within a reasonable range and pay attention to reasonable diet. 2.Gout: The patient’s urine may be acidic, lower urine pH, and also have joint Pain, mostly acute at night. Oral medication can be taken as prescribed by the doctor, and the intake of animal offal and seafood should be avoided in daily life. 3. Chronic glomerulonephritis: Patients have lower urinary pH, proteinuria, hematuria, hypertension, hyperalgesia and edema, etc. Oral medication can be taken as prescribed by the doctor, and the intake of protein and phosphorus should be restricted in the diet, and a high quality low protein diet should be adopted. In addition, urine pH will be low when problems such as acidosis and urinary tract stones occur. If a patient develops uncomfortable symptoms such as dyspnea or hematuria, he should seek medical attention promptly to identify the cause and treat the cause.