Type 1 diabetes is caused by a certain pathogenic factor, resulting in a genetic defect, and there is no complete cure for it, but through good care and regular treatment, the onset of the disease can be delayed. In the early stages of the disease, type 1 diabetes will show an obvious increase in food intake, which is often easy to ignore, sometimes mistakenly thinking that the physical condition has become better and there is an increase in appetite. The appearance of an unexplained increase in food intake should then be evaluated in conjunction with other symptomatic manifestations, and of course, timely examination should be conducted. Patients with diabetes are prone to blurred vision, mainly due to damage to the optic nerve caused by elevated blood sugar, which often causes patients to have difficulty seeing, often mistaken for myopia, etc. In addition, it is easy to cause fatigue, patients will appear depressed, reduced activity, physical weakness, etc. For the prevention of diabetes, should understand the meaning of three more and one less, is to eat more, urinate more, drink more, a sweep is the body appears thinning obvious, this is more summary of the symptoms of performance, if people appear such symptoms performance, we should go to the hospital in a timely manner for formal examination, early examination and treatment also has an important significance. For women with diabetes, they are prone to vulvar itching, and this itching is often due to unknown causes, which is something that requires some vigilance. In addition, diabetic patients also experience numbness of the limbs and the skin is prone to septic infection. Type 1 diabetes is a kind of diabetes, there is no completely special treatment method, through good treatment and diet and other aspects, can improve the patient’s disease, play a good preventive effect, understand some typical symptoms reaction, help ordinary people to better prevent diabetes, such as three more and one less, is more typical symptoms performance.