Measurement of brain natriuretic peptide precursor can identify dyspnea and assist in the diagnosis of heart failure, and also has reference to renal function and pulmonary function. Brain natriuretic peptide precursor is one of the diuretic natriuretic peptides secreted by the heart, and the normal value is usually less than 450pg/ml. Measurement of brain natriuretic peptide precursor can diagnose the existence of heart failure, and the level of brain natriuretic peptide precursor content can reflect the severity of heart failure, and it also plays an effective role in monitoring the treatment period of heart failure, and the patients with renal insufficiency will also have the phenomenon of brain natriuretic peptide precursor elevation. However, the level of brain natriuretic peptide precursor can be affected by gender, age, physical fitness and other factors, so when the body has shortness of breath, dyspnea, unstable blood pressure, etc., you can go to the hospital for brain natriuretic peptide precursor measurement, and through active treatment, the level of brain natriuretic peptide precursor can be effectively improved, and regular checkups, and pay attention to rest on a daily basis.