Normal people have very little urine sugar in their urine, which is usually undetectable. When the blood sugar index exceeds 160mg/dl, too much sugar may be excreted from the urine, forming urine sugar. Therefore, elevated urine sugar still suggests a higher likelihood of diabetes, but there are other diseases that cause urine sugar, such as renal urine sugar, mostly seen in chronic nephritis, nephrotic syndrome, etc. The presence of urine sugar in the middle and late stages of pregnancy cannot be diagnosed as diabetes either. It is just a temporary appearance of renal urine sugar due to poor absorption of sugar by the renal tubules, and the symptoms should be relieved as the pregnancy period ends. After the occurrence of urine sugar, it is still recommended to go to the endocrinology department of a public hospital for a formal examination to find the cause of the patient’s elevated urine sugar through blood glucose examination, glycosylated hemoglobin measurement and other examination items, and then consider later treatment options.