Bletilla has two functions: 1. Astringent to stop bleeding, mainly used for bleeding from the lung and stomach, such as coughing up blood and spitting up blood. Most of them are used in combination, such as coughing up blood caused by lung Yin deficiency with loquat leaves; vomiting blood with squid bones; bleeding from trauma can be applied externally by grinding alone; cracked hands and feet in all seasons can be applied with ground sesame oil; skin ulcers that do not close for a long time, this product can be applied externally to regenerate the muscle. 2, Bletilla can treat pulmonary carbuncle coughing up pus and blood phlegm and gradually losing weight, usually used in combination with Eryngium, also for its It is also used in combination with Radix Platycodon grandis to stop bleeding and produce muscle. Modern clinical treatment of gastrointestinal bleeding and tuberculosis bleeding with this product has good hemostatic effect and can promote ulcer healing. It is important to note that Bletilla is a contraindicated drug and is prohibited to be used with Aconite.