In the long process of history, thousands of styles in the field of architecture have been cultured. Among which, two of the most famous and splendid ones are the Baroque style and the Renaissance style which exists before it. Quantities of articles, lectures and researches regards with these styles have been published. So How the Baroque style architectures come into being and how it differs from other style of architectures? Is Baroque architecture a great success? This essay will first present the nature of the Baroque style by revealing Baroque style and its achievement. Following this, the essay will explore how Baroque architecture differences from the Renaissance style. Finally, the essay will discuss the purpose of the Baroque style and appraise the Baroque architecture.   As regard to the nature of Baroque architecture? Baroque architecture has it own characteristics and style.   In term of the architecture structure, the following are some important features of Baroque architecture (Lemerle and Pauwels, 2008):   1.        Narrow, long, central oriented, usually with circular shapes and forms.   2.        Applying light dramatically, with many light windows, it has chiaroscuro effects   3.        opulent use of ornaments (puttos made of wood, plaster or stucco, marble or faux finishing)   4.        Large-scale ceiling frescoes and characterized by dramatic central projection   5.        Contain shell shape for painting and sculpturing in the inner part   6.        Illusory effects with a combination of painting and architecture       The following photos clearly reflect the features of Baroque architectures       图略     "Baroque" refers to various styles, and it stresses on the similar nature of art in the history. For example "Gothic': Baroque used to be a sneering word. Its Portuguese form is barocco, which means irregular and defective; its Italian form is used to describe a complicated logic in the medieval time. Although Classical themes and subject matter Classical subjects and themes have always been the objectives of artists (Christian, 2003). However, Baroque sculpture and painting are intended to become overtly emotional, relatively unrestrained, and full of more power than those styles before. As to the nature of the Baroque style, it is just like a precious inheritance of the old Roman culture as well as the architectures which were built after the Renaissance time. The Baroque style has been shown in a lot of ways, but the most famous of these are the architecture of Baroque styles.   Baroque artists never accepted Mannerist stylization and virtuosity but the direct study of nature. In the visual arts of 17th century, there was a new try for violent narrative and dramatic action scenes well emerged in the visual arts (Hatherly, 1986). Moreover, a wide range of expression added in inner emotions but different to the Renaissance adherence to Classical restraint. Baroque light and color are relatively in differences with rich surfaces originated separately, along with a number of paintings with Mannerism to achieve a new style and position in Baroque.   Since the Baroque architecture style is evolved from the Renaissance style, so how the Baroque architecture differs from the Renaissance one? Renaissance style architecture was invented with the happening of the Renaissance revolution in the 14th century in Italy. Generally it was based on the approval of humanism and the critics on the so called “god is everything” during the Middle Ages (Ndalianis, 2004). People who lived in the Middle Ages were very tired of the hard and confused life, as a result, more and more of them hoped to do something to make a change. Some architects hoped to use the classical percentage in architecture to remodel a harmonious order just like the ideal classical society. In other word, that is just why in the Renaissance style, one can often see a clear percentage and order. The architectures of the Baroque style are much jazzier and free than those of the Renaissance style in expressing their feelings and thoughts.   The Roman architect Vitruvius’ writings were fountain of Renaissance architecture. This fine art applies not only rules and outwards forms: vaults, domes, arches, pilasters and columns, but also Tuscan, Ionic, Doric, Corinthian, and Composite from roman orders. Besides, if the columns support two or more levels, the building would be sustained by a Giant Order (Pater, 1976). The intrinsic value of Renaissance buildings contains regularity, structure, as well as impressiveness. With scrollwork of decoration, churches usually have domes. On one hand, Baroque architecture shares common classical elements of domes, columns and so on with Renaissance one. On the other hand, Baroque aims for the impact of vigor and charm (Heinrich, 1971).   ......