Those that are mainly composed of diaphoretics and can induce diaphoresis, expel pathogenic factors from muscles and skin, promote eruptions, and be used to treat exterior syndromes, fall into this category.

Since exterior syndromes cover two types, namely wind-cold type and wind-heat type, prescriptions for relieving exterior syndromes are divided into prescriptions for relieving exterior syndrome with pungent-warm drugs and those for relieving exterior syndrome with pungent-cool drugs accordingly.
 
The former mainly comprises drugs with pungent flavor and warm property for relieving exterior syndrome. It is capable of expelling wind and cold and applicable to exterior syndrome due to wind-cold, while the latter, pungent and cool drugs for relieving exterior syndrome, capable of dispelling wind and removing heat and applicable to exterior syndrome caused by wind-heat.
   
Prescriptions for relieving exterior syndrome cannot be decocted long in order to prevent the drug property from dissipating and influencing the curative effect. Besides the patient should take the decoction warm and pay attention to keeping warm by himself afterwards to ensure mild perspiration over the body. In doing so, the pathogenic factors will be expelled from the exterior.