The reasons why diabetic cough is not easy to get well include not meeting the blood sugar standard, low immunity, recurrent infections, and special pathogen infections. 1. Blood sugar does not meet the standard: diabetic patients should set the goal of sugar control according to their own situation, long-term sugar control does not meet the standard, easy to lead to upper respiratory tract infections, bronchitis or pneumonia, resulting in cough is not easy to get well. 2. Low immunity: diabetic patients with low immunity are susceptible to recurrent pathogen infections, resulting in a cough that is not easy to get rid of. It is also easy to combine with tuberculosis bacillus, pulmonary sporotrichosis and other special pathogens infection, the treatment is more difficult, the condition is more difficult to control. Diabetic cough should go to the hospital, under the guidance of the doctor to avoid delay.