Thick sputum from a cold does not mean that you are almost well, but that you suspect a bacterial infection. In this case, it is recommended to go to the hospital for routine blood tests. If the blood picture is elevated, bacterial infections are considered, and antibiotics are routinely applied. If you have a strong cough, you should use cough medicines, such as cough granules and cough syrup, to relieve phlegm. During the treatment period, it is important to take rest and avoid overexertion, as well as to actively quit smoking, drink more water and eat more vegetables and fruits. The treatment cycle is usually 5-7 days, after recovering from the cold, you should strengthen physical exercise to enhance physical fitness.