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 the lower limbs to sit for a while, and also use their hands to massage the lower limbs from top to bottom to help blood return. 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 dihydrocortisone can be used, 25mg (1 tablet) each time twice a day, and the edema can subside after a few days. In the diet, it is advisable to eat foods that are dehydrating and diuretic; foods rich in high-quality protein; foods that can be easily digested and absorbed. Avoid eating pickled foods; such as salted meat, salted eggs, salted fish; avoid eating foods that are not easy to digest; such as dried sweet potatoes, rice cakes, rice poop; avoid eating spicy and stimulating foods; such as chili pepper, pepper, mustard. The following foods are recommended to eat less or not: 1, salted meat Salted meat is a food containing a lot of salt, which can easily lead to water sodium storage slip, leading to increased edema, which is not conducive to the recovery of patients. It is advisable to eat low-salt food. 2, dried sweet potatoes dried sweet potatoes are difficult to digest food, easily lead to abdominal distension, intestinal peristalsis slowed down, affecting the absorption of nutrients, is not conducive to the recovery of patients. It is appropriate to eat easily digestible food. 3, chili pepper is a stimulating food, easy to stimulate the gastrointestinal tract, affecting the absorption of nutrients in the intestines, which is not conducive to the recovery of patients. It is advisable to eat light food.