With left atrial enlargement and active management of the primary disease, patients can be no different from normal people and survive normally. If there are difficult to deal with the primary disease, and belong to the advanced atrial enlargement patients, the prognosis is poorer, but life expectancy can not be generalized, should be based on the patient’s own situation. 1. Patients with mild primary disease: If the left atrium is enlarged in young and middle-aged patients with hypertension, the left atrium can be relieved and stop enlarging after actively controlling blood pressure, and the patients may not have any performance or have mild symptoms. The prognosis is good and no difference with normal people. 2. In patients with severe primary disease, such as those with mitral stenosis or chronic heart failure, the degree of atrial dilatation is generally more severe. The degree of atrial dilatation in this case is generally more serious, with obvious symptoms and irreversible atrial dilatation. If there are obvious triggers to aggravate the patient’s condition, the patient’s prognosis is poor. Patients with enlarged left atria are advised to go to a regular hospital for standardized treatment to avoid delays.