In 1980, the American Nursing Association defines nursing as: "Nursing is to diagnose and deal with human responses to existing or potential health problems." According to this definition, modern nursing is a science that studies how to diagnose and deal with human responses to existing or potential health problems. Emphasis on "people's behavioral response" is manifested in people's behavioral response to a thing from physiological, psychological, social, cultural and spiritual aspects. For example, the behavioral response of patients with myocardial infarction can be manifested as: physiological-pain, chest tightness, shortness of breath; Psychology-fear, fear; Socialization-the care of relatives; Cultural knowledge and understanding of disease knowledge; Mentally-whether it is valued and respected by nurses and doctors. This definition reflects four basic characteristics of nursing:

1. Understanding the phenomenon: Nurses should understand human reactions to existing or potential health problems when making diagnosis and treatment.

2. Applied theory: Nurses use nursing theory to further observe and understand phenomena and use it to solve these problems.

3. Adopt action nurses to help individuals, families and social groups maintain their lives, alleviate their pain and promote their health through nursing activities.

4. Evaluation effect: Nurses evaluate the effect related to people's health response through nursing activities. Based on the theories of nursing science, related disciplines and marginal disciplines, nursing papers are composed of first-hand materials obtained through scientific research design, experimental observation, inductive analysis and necessary statistical processing, or nursing scientific articles synthesized, analyzed and sorted out by using second-hand materials. In short, nursing paper is a kind of scientific paper, which is an argumentative paper used to carry out nursing scientific research and describe the research results.