Changes of art history have been a series of reaction against rigid thinking and changes. From such a view, the start of expressionism in Europe in the 20th century was challenge to limitations of fixed and traditional norms. In addition, chaos of those days, introduction of mechanical culture and strong advocacy of man's internal and mental world were considered to be natural by-products. European artists in the early 20th period concentrated on reproduction and external expression of the nature and required a new art movement to escape from contemplative attitude in the sense of social and political crisis and to disclose the essence and problems of human being more radically. In particular, German expressionism which began to be settled in the early 20th century revealed the challenge to traditional authority and value with a strong Germanic temper. German expressionism was originated in reaction against academic impressionism and its mainstream was interpretation of subjective emotion and it has common features with artist's thoughts in the age of Romanticism. Its typical school includes Die Brucke (Bridge School) and Der Blaue Reiter (the Blue Rider School) and the former was mainstream in the middle and northern areas of Germany and expressed fantastic color and religious fantasy. Der Blaue Reiter was active in southern Germany centering around Munich and emphasized mentality and naturalistic sentiment. However, two schools were in the same horizontal trend of art history in that they made efforts to look for essential solutions for uncertain present and future. Although there was criticism that German expressionism inclined to excessive subjectivism in the middle of war, it deserved to be evaluated highly in that it tried to express emotion and ideology liberally in spite of difficult conditions. German expressionism which gave a fresh shock to dull art world of Europe and suggested future direction was very suggestive in that it gave a foundation