Eating leeches does not work as a treatment for diabetes with foamy urine. Foamy urine in diabetic patients may be caused by physiological factors, or may be caused by disease factors such as diabetic nephropathy. Diabetic nephropathy can appear proteinuria, protein can lead to the production of foamy urine, once diagnosed with diabetic nephropathy can follow the doctor’s instructions to take acarbose, metformin and other hypoglycemic drugs or injections of insulin therapy, control blood glucose within a reasonable range. Patients with high blood pressure can use drugs such as captopril and chlorosartan to lower blood pressure under doctor’s guidance. Diabetic patients should actively cooperate with the doctor’s treatment, the emergence of foamy urine after the exclusion of physiological factors is recommended to go to the hospital, please doctor’s judgment.