War has been a reason for the culture of one conservative country to make contact with the culture of another country. The Crusade, among other wars, caused cultural exchange between the orient and the occident and had a great influence on the western costume. This paper has made an attempt to find out the influence of the Crusade with respect to the cultural exchange between the orient and the Occident and to study the influence which the Crusade has had on the western costume. The Crusade was the war in which the European Christians tried to retake the Holy Land, Jerusalem, from the Islamites through the 11th century to the 13th century. As a result of this war,the autyority of the Pope was weakned, the nobles were ruined and royal authority was consolidated. Due to the contact with the Orient, trade had become active, cityes had developed and the middle class of rich merchant had grown. Gothic architecture also appeared in the Occident at this time due to the religious influence of the Crusade. Turban type headdress and the brink decoration of clothes had been very popular under the influence of the Orient. Embroidery and applique had developed and silk fabrics which had been imported from the Orient had made the costumes more fabrics which had been imported from the Orient had made the costumes more gorgeous and luxurious. Many accessories were imported from the Orient. The Oriental culture contributed to the use of rich and bright colorsm, various ornaments and splendid textiles of the western costume. Owing to the influence of war itself, many costumes had been newly made in order to adapt to the hot desert climates of the Orient. Blazon decorations, uniforms and armour had also developed.