1, eucalyptus leaves are eucalyptus leaves, and koala's special food. Eucalyptus leaves are often used to extract insect repellent and deodorant because of their disinfection effect, but patients with hypertension, epilepsy and broad bean disease should avoid using products extracted from eucalyptus leaves.

2. Maple leaves are generally palmately divided, about13cm long and slightly wider than ordinary people's palms. The three largest lobes have a few prominent teeth, the base is heart-shaped, the leaves are rough, the upper leaves are medium green to dark green, the lower veins are hairy, and they turn yellow to orange or red in autumn.

3. Ginkgo biloba leaves contain a large number of ginkgetins, ginkgolides and other extracts, which have magical effects on human health.

4. Willow leaves are the leaves of weeping willows of Salicaceae. Weeping willows are resistant to water and humidity and can also be born in dry places. It is distributed in the Yangtze River and Yellow River basins and cultivated in other places.

5. The leaves of pine trees are pine needles, which contain a lot of chlorophyll, crude protein, crude fat, fat-soluble vitamin A and vitamin C, and minerals such as nitrogen, phosphorus, potassium, calcium and magnesium.