Chinese painting has a long history,From ancient times to today,the Chinese painters pay great emphasis on "nature outside and heart inside",They pay more attention on the Contemporary Painting and it makes Chinese paintings differ from Western painting very much.Also,because of this characteristic,Chinese painting is unique among the world's arts and culture.With this distinctive feature,Chinese paintings have been the treasures of the world's arts and culture and win the appreciation of all the people in the world.In this paper,the author takes the flower and birds Painting as an example to illustrate the development of Chinese painting impressionistic characteristics and laws of nature.