The degree of learning, the degree of knowledge application, and the economic benefits created by calculation training. KirkpatrickModel, also known as the four-level training evaluation model, was put forward by Donald L. kirkpatrick, an internationally renowned scholar and professor at the University of Wisconsin in the United States, in 1959. The model has successfully solved the problems such as the degree of learning acquisition, the degree of knowledge application and the calculation of economic benefits created by training. It is the most widely used training evaluation tool in the world and has an unshakable position in the field of training evaluation.