Background: Supraventricular arrythmias (SVAs) are a prominent class of cardiac rhythm problems in children defined by an irregular heartbeat that begins above the ventricles. Objective: To provide a summary of the clinical and paraclinical manifestations of SVA. Methods: The study included a review of prior studies on paediatric supraventricular arrhythmias. Results: SVAs are a prevalent form of arrhythmia in young people, with an estimated incidence of 1% to 2%. Children's supraventricular arrhythmias may possess a complicated aetiology that includes genetic predispositions and anatomical cardiac problems. The symptoms might be as mild as palpitations, lightheadedness, dyspnoea, or even more severe lke syncope. Most symptoms occur before the age of four months during the first six months of life. Various manoeuvres have been implicated in the diagnosis of SVA to include obtaining a thorough history about the onset and recurrence of palpitations, syncope, chest pain, dyspnea, heart failure, and drug use, and physical examination. Some 20% of asymptomatic SVT infants are incidentally diagnosed. The mainstay of paraclinical diagnosis of SVA is provided by the ECG, which uncovers typical patterns of irregularly irregular rhythms in AF and sawtooth patterns in atrial flutter. Intermittent arrhythmias may be captured with Holter monitoring and event recorders. Echocardiography also plays an important role in assessing the underlying structural heart disease, whereas blood tests may be required for detecting electrolyte imbalances or thyroid disorders that may precipitate the arrhythmias. Conclusion: In conclusion, to avoid potential problems in the aetiology and treatment of supraventricular arrhythmias in children, a complete approach that considers individual circumstances is required.