High pH is generally referred to as high vaginal pH and high urine pH. High vaginal pH can be caused by trichomoniasis, excessive vaginal douching, and frequent sex. High urine pH can be caused by diet, medication, alkalosis, etc. 1. Trichomonas vaginitis: the vaginal area is infected with trichomonas, and the acid-base balance of the vagina is disturbed, which seriously affects the acid-base balance and causes the high pH value. 2. Excessive douching of the vagina: if you often use irritating detergents or excessive douching of the vagina, it will seriously affect the acid-base balance of the vagina and reduce its resistance, thus resulting in the phenomenon of high pH value. 3. Frequent sexual intercourse: frequent sexual intercourse may also cause high vaginal pH. 4. Diet: If you consume more vegetables and fruits, your urine pH may be elevated. 5. Medications: Taking alkaline medications may also lead to high urine pH. 3. Alkalosis: because alkalosis may lead to the presence of excess sodium bicarbonate in the body, causing higher urine pH. Clinical advice pH high patients should go to the regular hospital in time to check, clear cause of the disease under the guidance of professional doctors targeted treatment.