Clinically, if a diabetic patient presents with foamy urine, it often suggests the possibility of the presence of diabetic nephropathy. It is recommended to improve the monitoring of urine microalbumin as soon as possible. If the urine microalbumin is positive, and the urine microalbumin is positive on multiple retests, it indicates the presence of diabetic nephropathy, and the following clinical management is needed: 1. Monitor blood pressure, if the patient’s blood pressure is obviously high, give ACEI or ARB drugs to lower blood pressure and urine protein, so that the blood pressure is controlled below 125/75 mmHg. 2. Monitor blood sugar, if the patient’s blood sugar control does not reach the standard, adjust the glucose-lowering drugs as soon as possible to make the blood sugar control reach the standard. If the patient’s blood sugar is not up to standard, adjust the glucose-lowering medication as soon as possible to make the blood sugar control up to standard, and require glycosylated hemoglobin to be controlled below 7%. 3, pay attention to monitoring the fundus, diabetic nephropathy is a small-vessel complication, often easily complicated by diabetic retinopathy, so improve the screening of diabetic retinopathy as soon as possible, improve the fundus photography examination as soon as possible to guide the treatment.