Medicines for treating yin and yang heatstroke: for yin heatstroke, take Elsholtziaziazine or Huo Xiang Zheng Qi San; for yang heatstroke, take Ten Drops of Water, Qing Heatstroke and Yi-Qi Tang, or Gui Ling Gan Gan San. 1. Yin summer heat is caused by cold in summer, resulting in symptoms such as malignant cold (fear of cold), fever, headache, no sweating, abdominal pain, vomiting and diarrhea, and chest and epigastric constriction. It is necessary to dispel the summer heat, resolve dampness and harmonize the middle (to get rid of dampness and harmonize the spleen and stomach), and take Elsholtziazine or Huo Xiang Zheng Qi San with additions and subtractions for treatment. 2. Yang heat is summer heat, causing fever and headache, irritability and thirst, and urination and vomiting and diarrhea, and other symptoms of damp-heat. It is necessary to clear the summer heat, dissolve the qi and promote dampness, take ten drops of water or Guiling Ganlu San plus reduction treatment. Summer heatstroke, need to consult a doctor in a timely manner, under the guidance of a professional doctor to identify the evidence of the selection of medication, do not buy their own medication to use, to avoid not distinguish between yin and yang heatstroke and the wrong use of medication, resulting in the development of the disease.