Urine sugar refers to glucose in urine, 2+ that is, urine sugar (++), indicating positive urine sugar. It may be caused by physiological factors or pathological factors, the details are analyzed as follows: 1. Physiological factors: for example, transient hyperglycemia caused by emotional excitement, late night or exertion. 2. Pathological factors: In general, sugar can be excreted from the urine only when the blood glucose exceeds 160~180mg/dl, so urine sugar (++) need to consider the possibility of diabetes. However, the diagnosis of diabetes mellitus also needs to look at the blood glucose value, if the patient’s fasting blood glucose ≥ 7mmol / L, or 2 hours after the meal blood glucose ≥ 11.1mmol / L, or random blood glucose ≥ 11.1mmol / L, the diagnostic criteria for diabetes mellitus, we recommend that the patient promptly go to the hospital to improve the relevant examination, to further clarify the diagnosis. If the patient’s urine sugar is abnormal, it is recommended to consult a doctor in time to avoid delaying the condition.