Elderly people can enhance their immunity by eating the following foods and medicines: 1. Fresh fruits and vegetables, such as yams, tomatoes, potatoes, mustard, grapes, apples, kiwis, etc. These fruits and vegetables are rich in vitamins and trace elements, which can effectively improve the immunity of the elderly and have a certain effect on the prevention of diseases. 2, dairy products, eggs, protein powder and other protein-rich foods can also effectively strengthen the immunity of the elderly. It can also enhance muscle strength and prevent accidents such as falls and fractures. 3, honey, bird’s nest, cordyceps, ginseng and other supplements are also good foods to improve the immunity of the elderly. 4, drugs can also enhance the immunity of the elderly, such as Jin Shui Bao, Bai Ling capsule, Liu Wei Di Huang Wan and so on are suitable for the elderly to take.