Abdominal breathing is a form of respiratory exercise, respiratory exercise is divided into abdominal breathing and thoracic breathing, most people use joint breathing and thoracic breathing is the main method. And the main advantages of abdominal breathing are as follows: 1, improve cardiopulmonary function: for every 1cm drop in the diaphragm, lung ventilation can increase by 250-300ml, which allows more oxygen to enter the lungs. Adhere to abdominal breathing, for increasing lung capacity, improve cardiopulmonary function is greatly beneficial, is an important rehabilitation means for patients with senile emphysema, lung disease induced cardiac insufficiency; 2, improve abdominal organ function: abdominal breathing can improve the function of the spleen and stomach, soothe the liver and promote bile secretion; 3, exercise the abdominal muscles: abdominal breathing can exercise the abdominal muscles to assist respiratory function, can help to excrete phlegm, prevent phlegm fluid stuck in the respiratory tract to prevent suffocation. The specific exercise method of abdominal breathing is to stand relaxed in a quiet environment, inhale through the nose to make the abdomen bulge, stop breathing 1-2 seconds later, exhale through the mouth to the abdominal wall sink, practice 5-6 times per minute can be, generally practiced twice a day, about 15 minutes each time.