Sedentary foot edema is not necessarily kidney disease. Sedentary foot edema is caused by obstruction of venous blood return in the lower limbs, the degree of edema may be physiological to a lesser extent, if the degree is heavier, it may be venous return obstruction in the lower limbs, liver disease, kidney disease, heart failure, etc. It is recommended to go to the hospital and consult with a professional doctor. 1. Physiological: generally there is no abnormal disease, after sitting for a long time, the feet will also appear swollen, the degree is usually light, press the instep will not appear depression can not rebound, and there is no varicose veins, etc., it is recommended to elevate the legs, or warm water soak the feet, generally can be relieved. 2. Pathological: Pathological foot swelling can be seen in liver disease, kidney disease, malnutrition, phlebitis of the lower extremities, cardiogenic diseases, etc., which may lead to lower extremity venous return slowing down, and fluid accumulates in the lower extremities causing swelling. It is recommended that patients with sedentary edema go to a regular hospital for further examination to clarify the specific cause of the disease and standardize the treatment according to the doctor’s instructions.