The normal value of urine pH is usually between 4.6 and 8.0. High urine pH may be caused by diet, medication, urinary tract infection, etc. 1. Diet: Consumption of too much alkaline food such as protein, high fat content food, consumption of a large number of vegetables, etc. may lead to high pH in urine, which can be recovered after stopping consumption. 2. Medications: Taking alkaline medications such as sodium bicarbonate tablets can cause urine to become alkaline, which is a normal phenomenon, and the pH value (acidity and alkalinity) will decrease after you stop taking the medication, but whether to stop taking the medication should be under the guidance of a doctor. 3. Urinary tract infection: When patients have a urinary tract infection, the secretion is usually alkaline, which leads to high alkalinity in urine. The above are only some of the common causes. If the patient has high urine alkalinity, it is recommended to go to the hospital for diagnosis and treatment under the guidance of a professional doctor.