Semen Platycladi has the effects of nourishing the heart, calming the nerves, relaxing bowels and stopping sweating. Can be used for treating yin deficiency and blood deficiency, asthenia, insomnia, palpitation, constipation due to intestinal dryness, and night sweats due to yin deficiency. The aromatic gas emitted by cypress has the functions of clearing away heat and toxic materials, eliminating dampness and killing insects, and can dispel diseases and resist pathogens and cultivate healthy qi. Its main components are triterpenes and limonene. It can not only kill bacteria and viruses, purify the air, but also relax the spirit and stabilize the mood. After inhaling the scent of cedarwood, people can lower blood pressure, reduce cerebral blood flow and relieve depression. Some countries implement forest therapy to let cancer patients go to cypress forest for recreation. Most (but not all) patients have improved their mental state and partially eliminated nausea and vomiting caused by chemotherapy. However, a large number of negative oxygen ions spread in the mountains, which can improve human immune function and regulate the functions of breathing and central nervous system, and is known as air vitamin. Cypress is a treasure, and resin, tree oil, fruits, branches and leaves can all be used as medicine. Seeds of Platycladus orientalis, such as seeds and leaves of Platycladus orientalis, are widely used in clinic.