The documentary research method is based on specific research objectives or topics, studying the literature in order to obtain information, to fully and correctly understand a method in order to understand the problem to be studied.Documentary research quilts are widely used in various specialized studies. Its role is as follows: (1) to understand the history and current situation of the problem, to determine the research topic (2), to make a one-way impression of the subject, to help observe and visit (3) in order to obtain realistic information on comparative information (4) in order to understand the overall picture of things.