Wild fruits and vegetables not only have unique flavor, but also have higher nutritional value than artificially cultivated fruits and vegetables. It is suggested that middle-aged and elderly people choose fresh and pollution-free wild vegetables and fruits to eat. Common wild vegetables and wild fruits are shepherd's purse, Malan, Hippophae rhamnoides, Rosa laevigata, Mulberry, Jujube and Ginkgo biloba. Some of these "wild fruits" also have certain therapeutic effects. For example, the ethanol extract of Ginkgo biloba, a mature seed of Ginkgo biloba, can dilate bronchi, has certain expectorant effect, has different degrees of inhibition on various pathogenic bacteria, and has obvious antithrombotic, anti-lipid peroxidation and anti-aging effects. Many wild fruits have certain toxicity, so middle-aged and elderly people should be careful when eating them, and they should know the nature and function of wild fruits before eating them. For example, eating gingko raw can be toxic, so 1 must be cooked.