Diabetes is a common and frequent disease, and its prevalence is rapidly increasing with the progress of social civilization in China, which seriously affects people’s health and life, and diabetes complications are the most important factors causing patients’ suffering and affecting their prognosis. It is crucial for diabetic patients to detect complications as early as possible for early prevention and early treatment. So, what are the complications of diabetes mellitus? The First Affiliated Hospital of Henan College of Traditional Chinese Medicine, Department of Endocrinology, Li Fucheng I. Skin damage 30% of diabetic patients will combine skin damage, if the following manifestations appear, it is likely to combine skin complications. 1. Pruritus: This pruritus is systemic, very persistent, and can appear in the early stage of diabetes, but when the blood sugar control is good the pruritus can be relieved. 2. Skin infections: including bacterial infections such as boils, folliculitis, etc., and fungal infections. folliculitis, etc., and fungal infections such as ringworm, tinea corporis, tinea pedis, tinea nail, etc. Peripheral nerve damage 10% of diabetic patients will develop peripheral neuropathy, showing skin numbness, pins and needles, pain, little or no sweating, mainly in the distal extremities, and in severe cases, motor impairment, muscle atrophy and paralysis. Eye damage Diabetic patients are prone to eye complications, mainly retinopathy, cataract, etc. 1. retinopathy: the longer the disease, the older the patient, especially those with hypertension and smokers are more likely to develop retinopathy, the patient can show visual impairment or even blindness. Diabetic patients should have at least one eye examination every year to achieve early detection, early prevention and early treatment. 2. Cataract: Diabetic patients are prone to combined cataract, mainly related to the lack of vitamin C, B6, glutathione, zinc and selenium in the lens, etc. After early detection, you can take cassia seed tea, wolfberry tea and chrysanthemum tea, which have the effect of nourishing the liver and brightening the eyes, and have certain preventive and therapeutic effects. Four, heart, brain, kidney and other important organ lesions The most serious complications of diabetic patients is to cause heart, brain and kidney lesions, mainly leading to cerebral thrombosis, cerebral hemorrhage, coronary heart disease, myocardial infarction, heart failure, arrhythmia, renal failure, etc. These comorbidities are the main lethal and disabling diseases, all diabetic patients should go to regular hospital checkups regularly to eliminate risk factors, early prevention and early treatment! Diabetic foot lesion is one of the serious complications, the early stage can show the foot skin dryness, sensory impairment, continued development can appear foot ulcers, necrosis, and eventually require amputation. Diabetic patients should pay attention not to wear hard shoes, pay attention to warmth in winter, do not wear sandals in summer to prevent sand, socks should not be too tight, soak feet with warm water for 30 minutes every day, and self-massage feet for 30 minutes.