Low respiratory rate may be caused by physiological factors, pathological factors, such as muscle weakness, obstructive sleep apnea hypoventilation syndrome, which can be treated by medication as well as surgery. 1. Physiological factors: If you have the habit of long-term persistent exercise, your cardiopulmonary function will be stronger, and you will also have a relatively low respiratory rate, which is a normal physiological phenomenon and does not require any treatment. 2. Pathological factors: (1) Myasthenia gravis: myasthenia gravis is the inability of muscles to produce normal strength, and there is a loss of muscle strength of different degrees. If the patient’s respiratory muscles are weak, there may be weak, disappearing breathing, and breath-holding, which leads to the patient’s low respiratory rate. It may be caused by excessive fatigue, which can be relieved by sufficient rest, or nerve damage, which needs to be relieved by taking medicines such as methylcobalamin tablets and glutamine tablets. (2) Obstructive Sleep Apnea Hypoventilation Syndrome: Obstructive Sleep Apnea Hypoventilation Syndrome will cause patients to snore during sleep, have apnea, and daytime drowsiness, which will also lead to low respiratory rate. It can be improved by sleeping in the side position, diet control, and surgical treatment such as adenoidectomy and hyoid suspension when symptoms are severe. Low respiratory rate may also be caused by other reasons. When low respiratory rate occurs, it is recommended to find out the cause of low respiratory rate in time and take active treatment.