The balloon dilatation of internal fistula can be managed for how long is mainly related to the severity of the disease and life care, can not be generalized, need to be analyzed in conjunction with the actual situation. 1. the severity of the disease: if the patient’s internal fistula is thicker, the condition is more serious, the balloon expansion support time will be shorter, easy to relapse, if the patient’s internal fistula is thin, the condition is less serious, the balloon expansion support time will be longer, not easy to relapse. 2. life care: patients with internal fistula balloon dilatation surgery, can get enough rest, the balloon is not the whole in the working state, support time is longer, if the rest is not enough, the balloon most of the time in the working state, support time is shorter. After the endocardial fistula balloon dilatation surgery, follow the doctor’s instructions to take antiplatelet drugs, regular review, pay attention to observe the use of the situation, if there is an uncomfortable reaction, you should inform the doctor in a timely manner, to adjust the treatment program.