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Also known as pine cone and pine cone. It is a dry and mature pine cone of Pinus bungeana or Pinus tabulaeformis of Pinaceae. Brown, multi-layered scales with pine nuts between scales. The scales of alpine pine are thin and dense, and the pinecone scales of subtropical pine are thick and sparse, and the fragrance of pine is not obvious. Fresh pine cone scales have small thorns at the top.

1. The method of inducing cough with ammonia water in mice proves that oral Songta decoction has certain antitussive effect, and the antitussive effect is mainly limonene in volatile oil.

2. The method of expectorant phenol red in mice proves that pine cone has obvious expectorant effect. The main component is terpineol, and the volatile oil also has certain expectorant effect. It is speculated from the study of terpineol that its expectorant mechanism may be related to promoting the recovery of glandular lesions and cilia injury and enhancing the movement speed of tracheal mucus-cilia.

3. The mixture of volatile oil from pine cone and histamine acetylcholine has obvious antiasthmatic effect in antiasthmatic guinea pigs. Further research shows that its main component is limonene. Decoction also has a certain effect.

4. The antibacterial activity of Songta Decoction is weak in vitro, but the volatile oil has a certain inhibitory effect on pneumococcus. The decoction can promote the recovery of pathological tissues of chronic trachea and bronchitis, reduce the infiltration of inflammatory cells and reduce goblet cells and mucus glands.