Background : Constitution is related to allergic patients. Objective : The aim of this study was to analyzed allergy Material and Method : We investigated 50 patients suffering from allergy and analyzed the relationship iris constitution and allergy. Conclusion : We analyzed allergy patients, among of them, Abdominal connective tissue weakness constitution is 33(66%), neurogenic type and hydrogenic constitution is 10(20%), bronchopulmonary connective tissue weakness constitution is 5(10%). We know that Allergic patients are abdominal connective tissue weakness constitution, neurogenic type, hydrogenic constitution and bronchopulmonary connective tissue weakness constitution.