Sedentary calf swelling is mainly due to the fact that disease factors such as varicose veins, venous stenosis, heart disease, kidney disease and other diseases may also lead to this symptom. 1. Varicose veins; when suffering from varicose veins of the lower limbs, because the varicose veins affect the venous reflux back to the right heart, there can be the symptom of swelling and hardness of the calves after sitting for a long time. 2. Venous compression: if there is popliteal cyst and other diseases in a long time in the sitting, will compress the blood vessels in the legs, impede the return of blood to the legs, it is easy to appear calf swelling and tightness. 3. Heart disease: patients themselves have heart disease such as right heart failure, etc., after sitting for a long time affects the lower extremity venous blood return to the right heart. It will produce the phenomenon of swollen and hard calves. 4. Kidney disease: but suffering from kidney disease such as glomerulonephritis and chronic renal failure and other diseases, due to the calf tissue between the edema will be obvious symptoms of calf edema. After sitting for a long time with calf swelling and tightness, you can get up and move around, which can promote blood return. If the patient’s symptoms are not relieved for a long time, or accompanied by other discomforts, it is recommended to consult a doctor in time to identify the cause of the disease and deal with it accordingly.