For children’s fast heartbeat, you can use the following measures to deal with: 1, let the children breathe deeply, deep breathing will stimulate the children’s vagus nerve, so as to reduce the symptoms of children’s rapid heartbeat. 2, the application of antiarrhythmic drugs for children, such as the application of children’s metoprolol, metoprolol can play a role in slowing down the heart rate. 3, give children timely treatment of heart failure, some of the children’s fast heartbeat is caused by heart failure symptoms, this time you need to give children the application of digoxin and other drugs to fight heart failure, the number of heartbeats will increase. The reason why children’s heartbeat is fast is suffering from heart failure caused by symptoms, this time you need to give the children apply digoxin and other drugs to anti-heart failure, after the application of drugs, the children’s heartbeat will be enhanced, the number of heartbeats will be reduced.