Colds after the weather suddenly becomes hot may be related to catching a cold accidentally, upper respiratory tract infection, etc. You need to treat the symptoms with medication according to the symptoms of colds, as follows: 1. Fever, runny nose, sneezing: you can take drugs such as compound aminophenol alkylamine tablets. If the fever is low you can take physical cooling method to deal with it, such as cold compresses on the forehead, warm baths and so on. When the fever exceeds 38.5℃, oral antipyretic drugs, such as ibuprofen granules, are needed. It is recommended to use all kinds of drugs under the guidance of the doctor, and take the medicine after meals to reduce the stimulation reaction of the drug to the gastrointestinal tract. Children must use pediatric cold and flu medication, pregnant women should be careful with medication. 2. Cough and phlegm symptoms, you can use cough medicine, such as bromhexine, cotrimoxazole oral solution. If coughing yellow pus sputum, blood test leukocyte elevation, need to add antibiotics, such as cefixime dispersible tablets, roxithromycin, amoxicillin and so on. Strictly according to the doctor’s instructions to use drugs, taking cephalosporins during the treatment is forbidden to drink alcohol. Once you have a cold, take over-the-counter medications for three days without relief of symptoms, be sure to go to the hospital as soon as possible.