Study on the significant symptomatic and effect of treatment methods on 50 patients with 3 degree heart block (23 females and 27 males), were treated at Cardiovascular Hospital during 2002-2003. The results: 70% of total patients had Adams-stokes cyncope. 28% of them were made extent or temporary pacemaker with indications as slow heart rate making a severe Adams-stokes syncope or nearly making Adams-stokes syncope, A-V disorders, young patients with suspective inflammatory induced A-V block. All of patients were treated by Atropine, Theophylin, Ephedrin or Isoprenalin, but only 2 cases decreased of A-V block. 38 patients had successful with permanent pacemaker implantation