Alkaline urine indicates that the pH value of urine is greater than 7, caused by the following reasons: 1, oral alkaline drugs such as sodium bicarbonate tablets or stomach disease taking some drugs to neutralize stomach acid can lead to alkaline urine in the body environment; 2, the use of diuretics, such as furosemide tablets or suffering from cystitis, there may be alkaline urine; 3, with digestive tract diseases, there are frequent vomiting, which can lead to excessive loss of gastric acid in the stomach, there can be alkaline urine and alkaline urine; 4, when suffering from renal tubular acidosis, there can be paradoxical alkaline urine, because there is an increase in bicarbonate ions, there can be a urine test is alkaline; 5, eating a large amount of vegetables, there can be alkaline urine.