Swelling of the feet in the morning, the following causes are common: First, lower limb vascular lesions: such as deep vein thrombosis or varicose veins, can lead to venous reflux disorders, distal limbs, such as the feet will appear swelling symptoms in the morning, accompanied by limb soreness and weakness, walking will also be difficult, can not stand for a long time, through the ultrasound examination will find lower limb venous lesions. Second, internal diseases: such as serious heart dysfunction and kidney dysfunction can lead to swelling of the low hanging parts of the limbs, such as the feet, which is more obvious in the morning, and the swelling will be gradually reduced after the daytime activities, and the treatment of the primary disease can also improve the symptoms of swelling of the feet. The symptoms should be avoided.