Long hours in a car, the lower limbs can appear swollen, medically known as “traveler’s edema”. Therefore, when riding in a car, do not always sit, should always change the position, or stand for a while or elevate the lower limbs to sit for a while, also can be used to massage the lower limbs from top to bottom to help blood flow back. Travelers with edema should pay attention to not always sitting when riding in a car, and should often change their position, or stand for a while or elevate their lower limbs to sit for a while, or use their hands to massage their lower limbs from top to bottom to help blood flow back. If edema is strong, salt intake can be appropriately limited, water does not necessarily need to be strictly controlled, when edema is significant, a small amount of dihydrocotrimoxazole can be used, 25mg (1 tablet) each time twice a day, and the edema can subside after a few days. In terms of diet, it is advisable to eat foods that are dehydrating and diuretic; foods rich in high-quality protein; and foods that can be easily digested and absorbed. The following foods are recommended to be eaten in moderation: 1. Kelp Kelp contains a large amount of mannitol, which has a diuretic and dehydrating effect and can play a role in reducing edema, which is conducive to relieving the patient’s symptoms. It is recommended that 200-300 grams per day is appropriate. Milk Milk is rich in high-quality protein nutrients and a variety of mineral elements, which can enhance the body’s immunity, prevent hypoproteinemia, and help patients recover. It is recommended that 300-400 ml per day is appropriate. Hot drinks are preferred. 3, bananas Bananas are vitamin-rich food, with laxative and intestinal tract, to promote the absorption of nutrients, conducive to the recovery of the patient’s body. It is recommended to have 2-3 bananas per day.