Stomach cold syndrome refers to the syndrome of stomach cold caused by stagnation of yin cold in epigastric pain, so it is also called cold coagulation epigastric pain syndrome. Abdominal cold and overeating lead to cold, and cold pathogens condense in the stomach, causing qi stagnation and onset. It is characterized by cold pain in the epigastric cavity, aggravated cold, decreased temperature, light mouth without thirst, or accompanied by light mouth, light tongue, white and slippery fur, and slow or stringy pulse. Stomach cold syndrome should be differentiated from stomach qi deficiency and cold nature. The former is the syndrome of excess cold, which is acute when cold pathogen attacks the stomach, with severe illness and short course of disease; The latter is deficiency-cold syndrome, with slow onset and long course of disease, which is not easy to recover, and mostly appears in spleen-stomach deficiency-cold syndrome, accompanied by symptoms of spleen-stomach deficiency-cold, such as abdominal distension, worse after eating, loose stool and so on. = = = = = = = = = = = = = = = = = = = = = = = = = Stomach-heat syndrome is the excess heat syndrome of the stomach, also called stomach-fire syndrome. According to its manifestations, it can be divided into two types: stomach heat stagnation type and stomach fire inflammation type. The former is confined to the stomach, also known as stomach heat or latent fire in the stomach, which is characterized by burning pain in the epigastric cavity, noisy acid swallowing, or vomiting immediately after eating, or thirst for cold drinks, or red and astringent urine, red tongue with yellow coating and slippery pulse when hungry; The latter lesion is not only in the stomach, but also in the area along the stomach meridian, causing gingival swelling, cheek swelling, gingival bleeding, pharyngeal tonsil swelling and bad breath. Stomach heat syndrome should be differentiated from stomach yin deficiency syndrome. The former is stomach heat syndrome; The latter is stomach deficiency-heat syndrome.