The following possibilities should be considered: 1. Pay attention to the presence of pneumonia, it is best to go to the hospital and let the doctor listen to the lungs for rales, if necessary, a chest X-ray is needed to confirm the diagnosis. 2. Pay attention to the presence of atypical pathogens, commonly mycoplasma, chlamydia, or bacterial infections that are not very pathogenic but easily resistant to drugs, which can cause a prolonged cough and sputum. 3. If you have chronic rhinitis or sinusitis, you should pay attention to the possibility of cough variant asthma. 5.