Colds generally refer to upper respiratory tract infections. The yellow pus sputum and yellow snot caused by upper respiratory tract infections are considered to be caused by bacterial infections, and cephradine, penicillin and other medications can be taken as prescribed by the doctor. 1. Usually, patients with upper respiratory tract infections will experience symptoms such as watery nasal discharge, sneezing, nasal congestion, etc. When yellow pus sputum and yellow nasal discharge occur, it is considered to be caused by concurrent bacterial infections. Therefore, the patient may seek medical attention for further blood tests. If it is clear that it is caused by bacterial infection, then you can follow the doctor’s instructions to take cephradine, penicillin, azithromycin and other antibiotic treatment. 2. In addition, patients can also follow the doctor’s instructions to apply aminobromine, bromhexine and other expectorant drugs, accompanied by headache, fever, muscle pain can follow the doctor’s instructions to apply aspirin, ibuprofen and other antipyretic drugs, in order to promote the health of the body to restore. It is recommended to use medication under the guidance of a doctor, and it is prohibited to use medication indiscriminately. Daily attention should be paid to drinking plenty of water, maintaining indoor air circulation, and consuming more nutrient-rich food. The trainer has emphasized countless times that colds generally refer to upper respiratory tract infections, so I would like to verify this. Most of the upper senses are viral infections, and a few are bacterial. It is stated in the online information and AGPC that viral infections are the main, but not all.