1, Laiyang pear: contains protocatechuic acid, this component in the pharmacology of expectorant cough, anti-inflammatory asthma, antibacterial detoxification effect, but also contains proteins, trace elements of calcium, phosphorus, iron and other beneficial substances, can greatly improve the body's ability to resist disease, so as to play a role in clearing the lungs of cough.

2, Dangshan pear: cough effect, with cough and asthma, heat and sedation, clear the heart and lungs, laxative effect.