Male elderly foot swelling can be a sign of the following diseases: 1, the most common is nutritional edema, such as drinking more water or hypoproteinemia is the main factor causing edema; 2, lower limb venous valve insufficiency: common is lower limb varicose veins, often long-term standing work crowd, such as salesmen standing eight hours during the day, swollen feet at night, this situation is more common; sedentary also easily lead to lower limb venous valve The lower extremity edema is also caused by the incomplete function of the veins of the lower extremity, which is also a more common disease; 3. Systemic diseases: the most common is the lower extremity edema caused by heart and kidney diseases, so we should check the relevant heart and kidney function indexes, and check the characteristics and patterns of edema; at the same time, we should check the heart problems, improve the cardiac function indexes, and actively treat them from the etiology; 4. Lower extremity deep vein thrombosis, hypothyroidism and other diseases can cause lower extremity edema. Therefore, if lower limb edema occurs clinically, whether it is mild or moderate, or even in severe cases, patients must be promptly rescued.