No food to relieve swollen feet. Swollen feet in summer, if caused by prolonged standing, it is recommended to elevate the lower limbs to promote blood return, which can relieve the symptoms. If it is caused by pathological factors such as kidney disease and liver disease, it should be relieved by reducing water intake and taking medication in this case. 1. Physiological factors: (1) Standing for a long time: Standing for a long time or female pregnancy may cause swollen feet, which can be relieved by elevating the lower limbs to promote blood return. 2. Pathological factors: (1) renal disease: nephrotic syndrome can cause proteinuria or combined hypoproteinemia, resulting in decreased osmotic pressure of the blood, which in turn causes an increase in interstitial water in the tissues, leading to swollen feet in the summer. Cyclophosphamide, tacrolimus and other drugs can be taken under the guidance of the doctor for relief. (2) Liver diseases: Hepatitis, fatty liver, cirrhosis and other liver diseases can cause hypoproteinemia, which can lead to swollen feet in summer. You can take drugs such as polyene phosphatidylcholine and glycyrrhizin under doctor’s guidance and supplement albumin for relief. Swollen feet are obvious or recurring, you should seek medical attention to avoid delaying your condition.