Cold symptoms are generally divided into three stages: the early stage, the middle stage and the recovery stage. 1. Early stage of cold: the main symptoms include nasal congestion, runny nose, dry throat, sore throat and chills, etc. It is recommended to keep warm, eat a light diet and have a good rest in this stage. 2. Middle stage of cold: In addition to the above symptoms, this stage also includes fever, muscle pain and other symptoms; this stage is the heaviest stage of cold, its related symptoms are more obvious, and the damage to the organism is greater. 3. Cold recovery stage: This stage is the stage when the body is gradually reduced after conditioning; i.e., the above cold symptoms gradually disappear and the body slowly returns to normal.