If the right hand is simply swollen, it may be caused by the following reasons: 1, osmosis: osmosis during infusion can lead to tissue interstitial edema, and then swelling of the right hand, which needs to be stopped in time, and can also be treated by external application; 2, local thrombosis: local thrombosis of the right limb can lead to impaired reflux, and then swelling of the right hand; 3, trauma: it may be combined with infection, leading to wound or local fever The right hand is swollen and swollen, and it needs symptomatic anti-inflammatory treatment; 4. Dialysis: the arteriovenous endovascular fistula of the right limb can lead to central venous stenosis and swelling syndrome of the right hand, which usually does not show redness, swelling and pain, but it will appear. At this time, the central venous stenosis needs to be lifted, and even the right internal fistula may need to be occluded to lift the swelling.