The leaves of Perilla frutescens are the dried leaves (or shoots) of Perilla frutescens, family Labiatae. Perilla leaves are pungent in taste and warm in nature, and are attributed to the lung and spleen meridians. They have the effects of relieving exterior and dispersing cold (removing cold from the muscular surface), moving qi and harmonizing the stomach (regulating the stomach and internal organs by promoting the operation of qi). It is used for wind-cold cold, cough and vomiting, vomiting in pregnancy, fish and crab poisoning. Perilla leaves are used with honey and ginger to treat vomiting and vomiting in choking disease, and dietary intolerance; combined with scutellaria, atractylodes, licorice, onion, and ginger to treat typhoid fever in pregnancy (a disease in which fever is caused by feeling cold). Perilla leaves are warm in nature, so people with yin deficiency and warm diseases should take it with caution; Perilla leaves are pungent and dispersive and easy to consume qi, so patients with qi deficiency should use it with caution. It is recommended that patients consult a doctor before using the drug, do not take it on your own, so as not to delay the condition.