The swelling of the hands and feet in the morning may be caused by nephritis, but liver, thyroid and heart diseases should also be excluded. The most common cause of swollen hands and feet in the morning is nephritis, especially chronic glomerulonephritis. Other kidney diseases can also cause swollen hands and feet, such as nephrotic syndrome, which is accompanied by symptoms such as increased foam in the urine and reduced urination. In addition to kidney diseases, other diseases should also be taken seriously, such as liver diseases, mainly cirrhosis, heart diseases, mainly right heart failure due to long-term lung diseases, and hypothyroidism, etc. These diseases can lead to swelling of the hands and feet. In order to exclude the above causes of hand and foot swelling, in addition to the symptoms, the main thing is to improve the relevant tests, such as liver and kidney function, thyroid function and urinary routine, because in most cases, auxiliary tests are the gold standard for diagnosing the disease.