Pain is the sensory and emotional experience of discomfort whiehis usually associated with actual or threatened physical damsge or irritation . Virtvally all people experience pain at all ages. Children also experience pain from the moment of birth through childhood years. Underestaning pain in children is very important , because of treatment implication and its influence in child physical and psychological development . Experienced researchers have found that pain is a concequence of emotional disorder which is observed in some patients . in many cases we have seen that a patient says to his / her clinician that she has no pain because there is no evidence of somatic disease. Dicomfont involved in psychogenic pain seems to resort primerly from psychological process. Many of physicion are familiar with unpleasant and avoidant concequences of these distortions . In these cases , it s better for us to agree with patients , experience of pain and not to prob somatic risk factors and their mechanism all the time. The researches hove recognized that psychological factors cam cause pain which is named psychogenic pain. It means that the cause of pain has psychological roots , versus organic pain which is related to discomfort is caused by tissue damage . In this study , theorical , psychological , psychoanalytical and psycho social approaches and personality characteristics description related to pain and the relations among these approaches in this area have been studied . Also, the perception of pain among children with different gender have been probed