Clove leaf is a famous medicine in Northeast China. Clove leaves are usually picked in spring and summer and then dried, which is a blind Chinese medicine. This product has the function of expelling wind, removing dampness and relieving pain, so it is often used to treat headache and lumbago in clinic, and can also be used to treat joint pain caused by rheumatism. Now people are developing its antibacterial and antiviral effects. Soaking ground clove leaves in water can cure colds. Drinking clove leaf tea regularly can also resist aging and protect the liver.