1. Efficacy of relieving exterior syndrome and dispelling cold: it is mainly used to treat cold, cough, headache and other symptoms caused by exogenous wind-cold, but it is best not to take it for people with qi deficiency.

2. Spleen-invigorating and stomach-regulating effects: clinically, it can be used to treat qi stagnation of spleen and stomach, nausea and vomiting, chest tightness and other symptoms, and is often used in combination with Pogostemon.

3, the effect of promoting qi and preventing miscarriage: it can be used for symptoms such as restless fetal movement. It is often used with Amomum villosum and Chenpi.

4. Perilla frutescens can't be used for people with febrile diseases and physical weakness.

5. Patients with symptoms such as yin deficiency, cold and heat, and aversion to cold should not be used.

6, can not be used for a long time.