1. Boiling water with oranges and lemons has the functions of promoting digestion, stimulating appetite, reducing weight, beauty beauty, resolving phlegm and relieving cough. Oranges and lemons are rich in vitamin C, which can enhance human immunity and effectively prevent the occurrence of influenza and scurvy.

2. Oranges contain hesperidin, narcotine, volatile oil and other ingredients, which have certain expectorant effect. If oranges are steamed with salt, it will have a certain effect on wind-heat cough.