Urine attracts a large number of ants, probably because of the high sugar content in the urine, can be caused by endocrine system problems caused by diabetes mellitus, physiological factors such as eating a large amount of glucose in a short period of time, can also lead to. 1. Diabetes mellitus: Diabetes mellitus is an endocrine disease produced by absolute or relative insufficiency of insulin secretion or impairment of insulin utilization. Glucose will appear in the urine, thus attracting ants. 2. Physiological factors: the renal tubules of a normal person will reabsorb glucose in the original urine to be re-released back into the bloodstream, and this maximum blood glucose concentration in urine without the presence of sugar is called the renal glucose threshold. When a normal person consumes a large amount of glucose in a short period of time, exceeding the renal glucose threshold, glucose will appear in the urine and may attract ants. Appearance of urine to attract a large number of ants, you should promptly go to the hospital, improve the relevant examination such as blood glucose measurement to clarify the cause of the disease, under the guidance of the doctor symptomatic treatment.