I dare not breathe in hard, and my heart hurts when I breathe in, which may be related to many factors, common causes are overeating, pleurisy, intercostal neuralgia, cardiac neurosis, etc., the specific analysis is as follows: 1, overeating: overeating may cause a lot of nutrients to be absorbed in the body, thus increasing the metabolic burden of the heart, the symptoms of heart pain when you breathe in, you should usually eat regularly, eat less and more, nutrition 2, pleurisy: patients will appear in deep breathing and coughing pain in the precordial area, found pleurisy should identify the cause, according to the cause to take appropriate treatment measures, if necessary, puncture or surgery; 3, intercostal neuralgia: patients will appear in the precordial area stabbing pain, deep breathing will aggravate, intercostal neuralgia in the acute phase can be given under the guidance of the doctor analgesic drugs, such as carbamazepine, gabapentin, etc., can also The patient will have symptoms such as discomfort and pain in the precordial area, and can eat some nerve-nourishing drugs such as glutamate under the guidance of a doctor. If you suddenly appear to be afraid to breathe in hard, and your heart hurts when you breathe in, and you can’t get better for a long time, it is recommended to go to the hospital to find out the cause and then treat it, so as not to delay the condition.