Cold and dampness are both yin evils, and both have the pathogenic characteristic of easily injuring yang qi, but they also have other symptoms when they invade the body, and there is a difference in their clinical manifestations. Cold is mostly caused by factors such as sudden drop in temperature, sleeping in the cold, air conditioning too cold, and eating cold and raw food. It has the characteristics of cold, condensation, collection and so on, when the cold evil invades the human body, it will cause cold (fear of cold) fever, no sweating, nasal congestion, sneezing and other symptoms of the surface of the cold; the epigastric cold pain (gastric and abdominal pain in the stomach and abdomen feel the cold), vomiting and diarrhea and other symptoms of cold; head, body, limbs and joints, pain symptoms. Dampness is mostly caused by humid climate, wading in water and rain, damp residence, and working in water. It is heavy, sticky and tends to go downward, etc. When dampness invades the body, it will cause diarrhea, edema and other symptoms of water-dampness (water-dampness stays in the body); heavy head and heavy body (heavy feeling in the head and limbs), heavy limbs and soreness, cloudy urine, loose stool and other heavy and cloudy symptoms. If you have any related conditions, it is recommended to be treated under the guidance of a professional physician, not blindly self-medication.