A runny, pus-filled nose is usually hot, and there is a light and heavy heat inside. If the pus is accompanied by yellowish color, it is a relatively heavy heat. Early in the cold is usually clear snot, generally consider wind-cold, with the passage of time, more will become sticky white snot, sticky point on behalf of the snot inside the heat, the more pus, the more yellow usually represents the more serious heat. Therefore, through the shape, quality and color of nasal mucus, you can initially determine whether it is cold or hot. If it is cold, it should be treated with warm and hot medicines, not cold and cool ones, and if it is clear snot, it should not be treated with wind-heat dispersing medicines. If it is pus or yellow pus, we should use some medicines to clear the heat, and at the same time use the medicines for rhinitis to cure the heat. If it is clear snot, it should be treated with warm medicines.