Influenza B belongs to the category of seasonal colds in Chinese medicine, and is characterized by wind-heat and wind-cold syndromes. Seasonal colds are widely prevalent over a period of time, with similar conditions, such as fever, chills, malaise, fatigue, sore throat, nasal congestion, runny nose, cough, muscle aches and pains, and so on. In Chinese medicine, there are wind-heat syndrome, wind-cold syndrome, wind-dry syndrome, summer-damp syndrome, and cold-packed fire syndrome. Wind-heat syndrome of seasonal cold manifests as fever, headache, fear of wind, dry mouth, thirst, dry pharynx, sore throat, cough, nasal congestion, runny nose, sore limbs, red tongue, thin white dry or thin yellow tongue coating and other symptoms. It is treated with the addition and subtraction of Thorny Prevention and Defeating Toxin Dispersion. Wind-cold syndrome of seasonal cold manifesting as cough, fever, headache, nasal congestion, runny nose, itchy throat, fear of cold, aching or sore limbs, sneezing, no sweating, thin white tongue coating and other symptoms. Yin Qiao San plus reduction treatment. Therefore, the seasonal cold is not a single wind-cold or wind-heat cold, but can be manifested in a variety of types, need to be treated under the doctor’s diagnosis.