After the blood sugar control of diabetes mellitus is normalized, some complications may still occur, such as retinopathy, peripheral neuropathy and so on. The main reason is that diabetes is a chronic disease, even if the blood sugar control is normal, the damage caused by the previous blood sugar abnormality on the organism, not necessarily can be completely recovered, so after the blood sugar control is normal, there may still be complications. After the normalization of diabetes blood sugar control, common complications include retinopathy, peripheral neuropathy, etc., which are mainly manifested as blurred vision, decreased visual acuity, and sensory hypersensitivity. It is recommended to go to the regular hospital in time after the emergence of diabetes, and actively receive treatment to control the condition as soon as possible to minimize the probability of complications.