Edema in the legs after sitting is usually caused by poor blood circulation and venous return in the lower legs after sitting for a long time, so the measures are as follows: First, you can usually stand and walk or lie down and elevate the affected limbs, and the swelling will be slowly eliminated. Secondly, to further promote its elimination, you can use hot water to soak your feet or apply blood circulation herbs to soak your feet, which is more effective, for example, you can use saffron, salvia, angelica and other herbs to boil water. Third, physical therapy can also be applied, such as pneumatic therapy for both lower extremities, which can quickly promote lymphatic and venous reflux, thus eliminating edema in the legs. You can also let the massage therapist to do local muscle massage of the calf, which can also reduce the swelling quickly.