The patient feels that the swelling of legs is caused by the following factors:1. From the perspective of orthopedic surgery, the most common factors are lumbar disc herniation and lumbar disc bulging, or sacroiliac arthritis, sciatica and a series of other diseases, which lead to peripheral radiculitis, or swelling caused by damage to the large nerves.2. Peripheral radiculitis and peripheral nerve insensitivity, there will be swelling of the legs, especially sensitive when diabetes is combined with peripheral neuritis, which will make you feel swelling of the legs.3. When peripheral neuritis is particularly sensitive, you will consciously feel swelling of the legs. 3, in the lower limbs of the venous reflux disease, can also feel swelling of the legs, such as lower limbs of the deep phlebitis, venous arterial valve closure of the disease, also due to the reflux is not smooth and lead to feel swelling of the legs. 4, in some cardiac hypoplasia, renal insufficiency, hepatic insufficiency of the patient, there will be arterial regurgitation, can also cause the The legs feel swollen.5. In patients with hypothyroidism, mucous edema of the lower limbs in front of the tibia will occur, and there will also be clinical symptoms and manifestations of feeling swollen in the legs.