What are the historical research methods?

There are many historical research methods, such as textual research, quantitative history, oral history, comparative history, psychohistory method, Marxist research method and interdisciplinary history method. Generally speaking, disciplines are interpenetrating, intersecting and combining with each other. The research methods of expanding the history of materials: textual research refers to the method of collecting and textual research materials, and textual research is also the most basic research method; Quantitative historiography needs to be measured by some statistical data, and then some conclusions are drawn; Oral history, also known as word-of-mouth history, is the product of the combination of history and sociology, ethnology, anthropology and other disciplines that focus on field work, that is, field investigation; Psychohistory method, also known as "psychohistory", improves the scientific understanding level of historical research; Interdisciplinary historical method can promote the comprehensive and coordinated development of disciplines and technologies, and Marxist research method is also a historical research method.