If patients have swollen legs during the day, the following factors should be taken into account: 1. The most common factor is endocrine metabolic factors, such as hypothyroidism and adrenocortical insufficiency, there will be swollen legs and feet during the day. 2. For some rheumatic diseases, such as rheumatoid arthritis and rheumatoid arthritis, there will also be swollen legs during the day. 3. In some patients with poor nutritional status 4. Patients with chronic renal insufficiency will have a large amount of proteinuria and hypoproteinemia, and will also have swollen legs during the day. 5. Patients with chronic cardiac insufficiency will have clinical manifestations of swollen legs during the day due to diminished heart function.