In diabetic patients with well-controlled blood sugar, the urine is usually not significantly different from normal people. However, if the blood sugar is poorly controlled or if the person has had diabetes for a long time, the urine may have characteristics such as high sugar level, foamy urine and protein urine. 1. High sugar level in urine: When a diabetic patient’s condition is poorly controlled, there will be an increase in the concentration of glucose in the urine, resulting in the viscosity of the urine will increase, sometimes even attracting some bugs, ants, etc. This is due to the fact that when diabetic patients have a relatively high blood sugar level, the blood sugar level exceeds the renal sugar threshold, leading to an increase in the concentration of glucose in the urine, while patients using hypoglycemic drugs such as SGLT-2 inhibitors can promote the excretion of urinary sugar, leading to an increase in the concentration of glucose in the urine, making the urine sugar higher; 2. Foamy urine and proteinuria: diabetic patients have more sugar or ketone bodies, as well as urine acidity and alkalinity Type 1 diabetes is prone to diabetic nephropathy at an early stage, and type 2 diabetes patients may also develop diabetic nephropathy as their disease duration increases, resulting in protein leakage in the urine and small and continuous foam in the urine. Also diabetic patients with laboratory tests such as urine routine and urine microalbumin will have high urine protein results, and 24-hour urine protein quantification can also be performed for relevant quantitative observation. In severe cases, soy sauce-colored urine will also appear; 3. High leukocytes: Diabetic patients are prone to urinary tract infections when their blood sugar is poorly controlled.