Impressionism, also known as impressionism, is a painting school that rose in France in the 1960s and 1990s. It was named after claude monet's oil painting Impression of Sunrise and was ridiculed by a reporter. 1874 the first impressionist painting exhibition was held in an apartment on Capucine avenue, with 3 1 impressionist painters participating.

From an artistic point of view, impressionist painters opposed the classical academic school, which occupied the orthodox position at that time, and opposed the romanticism, which was increasingly stuck in stereotypes and affectation. But under the impetus of realistic painting styles such as Koro, barbizon school and Courbet, he absorbed the nutrition of paintings from Holland, Britain, Spain, Japan and China, and was inspired by modern science, especially optics, thinking that all colors are produced. Because light is changing rapidly, they think that only by grasping the flash of light can we uncover the mystery of nature. Therefore, in painting, we pay attention to the study and expression of external light, advocate going outdoors and painting under the sun according to the observation of the eyes and the direct feeling of the scene, so as to show the subtle changes of the color of the object under the light. As a result, impressionist painting changed the black of traditional painting into bright blue and purple in the treatment of shadows. Impressionist painting replaced the simple lines and surfaces of traditional painting with dots, thus realizing the description of light that traditional painting could not achieve. Specifically, when we observe impressionist paintings at close range, we will see many different dots with messy colors, but when we observe them at a distance, these dots will gather together like seven colors of light, giving people the feeling of light and achieving unexpected results.

Because of the pursuit of external light and color, impressionist painters mainly take trivial things around them and direct experiences as their themes, and describe more people and natural scenery in reality. In composition, more fragments or scenes of objective images are intercepted to deal with the picture, which breaks the boundary between sketching and creation.