Danshen is slightly cold in nature, easily injuring yang qi. Long-term use may injure the spleen yang and affect the function of transportation and digestion, so it is not recommended to take it for a long period of time. Danshen is the dried root and rhizome of Salvia miltiorrhiza, family Labiatae. It is bitter in flavor and slightly cold in nature. It belongs to the heart and liver meridians. It has the effects of activating blood circulation, removing blood stasis, clearing menstruation and relieving pain, clearing the heart and removing vexation (removing vexation and heat from the heart), cooling the blood and eliminating carbuncles (eliminating carbuncles and swellings by clearing and cooling the blood). Salvia miltiorrhiza can be used for chest paralysis (stuffy pain in the chest), heart pain, hypochondriac (abdominal) dystocia (pain in the area of the coxae and ribs), impediments in the abdomen (visible or invisible lumps appearing in the abdomen, with a feeling of distension and pain), paralysis by heat (often manifested as burning, pain, redness and swelling of the joints and muscles), pain, restlessness and insomnia, menstrual disorders, menstrual pain and menstrual amenorrhea, and sores, ulcers, swelling and pain. Salvia divinorum in water may not be able to fully analyze the active ingredients of the drug, so the efficacy is limited. Patients are advised to follow the doctor’s prescription for medication, and should also be instructed by a doctor if they need to take Salvia miltiorrhiza for a long time due to health reasons.