Swollen feet of the eighty-something elderly is likely to be due to varicose veins of the lower extremities, gout, cardiac insufficiency and other diseases. 1. varicose veins of the lower extremities: varicose veins of the lower extremities of the eighty-something old man will cause poor venous return in the lower extremities, resulting in swollen feet, poor venous return in the lower extremities, accompanied by soreness, numbness, heaviness and other symptoms. 2. Gout: Gout is a joint disease caused by the precipitation of urates in the body. Eighty-something old people mainly show swollen feet, fever, fatigue, joint pain and so on. 3. Cardiac insufficiency: the eighty-something old man can also lead to cardiac insufficiency due to the reduced ejection function of the heart and the stagnation of blood in the peripheral tissues. In addition, in daily life to maintain adequate sleep, more rest, do not do strenuous exercise and physical labor. Swollen feet in eighty-something elderly people are also seen in other causes, it is recommended to consult a doctor in time for examination and symptomatic treatment, so as not to delay the condition.