A rapid heartbeat upon waking up is considered cardiac neurosis, an extremely common benign cardiovascular disease with a good prognosis. Common causes include anxiety, tension, emotional excitement, and trauma, which lead to disturbances in the regulation of the vegetative nerves and further cause a series of symptoms of sympathetic hypertonia. The main manifestations of cardiovascular neurosis include palpitations, chest tightness, shortness of breath, dyspnea, dizziness, insomnia, and dreaminess, etc. It occurs in young adults and is mostly seen in women, especially menopausal women. Premature beats or arrhythmias can be detected by electrocardiogram, anxiety and depression can be detected by physical examination, and cardiac examination and cardiac ultrasound are mostly abnormal. The disease is a functional disease, and the diagnosis should be made after excluding coronary artery disease and other diseases.