The suggestion is to rule out food and mental causes first, try to avoid mental tension and excitatory food and avoid intense exercise after. Then go to the hospital in time for examination. The rapid heartbeat in the afternoon sleep may be related to many factors, such as extreme mental tension, emotional anxiety, or lunch consumed some food or drink that can stimulate the nerves. For example, excessive consumption of strong tea, strong coffee, or foods containing cocoa, which can lead to panic attacks, nervousness, and rapid heartbeat. You should also try to avoid an excessive lunch. Try to avoid intense exercise before bedtime, and regulate your mood to avoid anxiety. In addition, hyperthyroidism, tachyarrhythmia, myocarditis, myocardial ischemia, heart failure and other cardiac diseases may appear in the midday sleep panic heartbeat accelerated and other symptoms, it is recommended to go to the hospital for thyroid function, electrocardiogram, dynamic electrocardiogram, echocardiography and other tests to rule out cardiac disease. If the above discomfort does not improve significantly after rest and adjustment, it is recommended to go to the hospital in time to clarify the cause and actively treat.