Always abdominal breathing does not cause any harm in normal adults, while some common diseases such as tuberculous pleurisy cause increased abdominal breathing requires standardized clinical treatment. Thoracic respiration is based on intercostal muscles, which is a kind of respiration with more obvious expansion of the thorax, while abdominal respiration is based on the diaphragm’s diastolic movement, which is a kind of respiration to regulate the upper and lower diameter of the thoracic cavity. Therefore, abdominal breathing is not detrimental to the health of normal adults. Tuberculous pleural effusion usually leads to pleural adhesions, resulting in weakened thoracic breathing and enhanced abdominal breathing. Clinical management of tuberculous pleural effusion includes rest and nutritional support, fluid aspiration and injection of streptokinase to reduce pleural adhesions, and administration of anti-tuberculous drugs (rifampicin, isoniazid, pyrazinamide, etc.). Therefore, for people with increased abdominal breathing, clinical treatment is usually not needed if there is no discomfort, but if accompanied by afternoon fever, night sweats (sweating abnormally after going to sleep and stopping after waking up) and other discomforts, it is recommended to go to the hospital as soon as possible and follow the doctor’s instructions to standardize the treatment, so as to ensure a good prognosis.