High urine sugar belongs to the urine routine examination of abnormal performance, often suggest the existence of physical disease may, generally caused by high urine sugar are the following circumstances: 1, high urine sugar often suggests that the body is in a state of hyperglycemia, so the most common cause of abnormal sugar in the urine is diabetes, so when found elevated urine sugar or urine next to often surrounded by ants, need to promptly go to the hospital to further do The OGTT test is to observe the fasting blood sugar and the specific blood sugar fluctuations in the postprandial period to further investigate diabetes. 2, renal diabetes, that is, there is damage to kidney function, kidney function can not be normal filtration, absorption of sugar in the urine and abnormal discharge of the situation, then you need to go to the hospital to do kidney function, urine microalbumin and other related tests to clarify whether there is kidney disease. 3, a large number of sugary foods in a short period of time, resulting in a short-term spike in blood sugar in the body, when the abnormal blood sugar in the urine will also appear, but often does not persist.