The topic selection should conform to the researcher's knowledge structure, intelligence level, research ability, professional expertise, hobbies and so on. Project researchers should have enough literature. The project should be supported by certain scientific research funds, leaders, family members and other members.

The principles of scientific research topic selection are: necessity principle, feasibility principle and rationality principle.

Scientific research topic selection is to strategically choose the main direction of scientific research and determine the process and method of research topic. The principle of innovation is the principle of value. It means that the topic should be novel, advanced, inventive and discoverable, so as to improve the academic level and promote the development of a certain subject.

The principle of necessity means that the topic should face reality, pay attention to social needs and stress social benefits. This is the first and basic principle of topic selection, which embodies the purpose of scientific research, that is, the purpose principle.

The so-called needs here include two aspects: first, according to the needs of social practice, especially the needs of industrial and agricultural production, this is its social significance; Second, according to the needs of the development of science itself, this is its academic significance. Or both.

The principle of feasibility means to consider the realistic possibility when choosing a topic. The principle of feasibility embodies the "conditional principle" of scientific research. The selection of topics must proceed from the subjective and objective conditions of researchers and choose topics that are conducive to development. If a subject does not have the necessary conditions, no matter how much the society needs, how advanced and how scientific it is, it is impossible to achieve it, and the topic selection is equal to zero.

The principle of rationality means that the topic selection should not only meet the needs of social and scientific development, but also have practical value; Really feasible; It depends on whether the topic itself is reasonable. The so-called rationality principle is also called scientific principle. For example, perpetual motion machine, turning water into oil, is always in vain.

Extended data:

According to the different purposes, tasks and methods of research work, scientific research is usually divided into the following types:

1, basic research. It is a discussion of new theories and principles, aiming at discovering new scientific fields and providing theoretical premise for new technological inventions.

2. Applied research. It is to apply the new theories found in basic research to the research of specific goals. It is the continuation of basic research, and its purpose is to open up specific application channels for the achievements of basic research and transform them into practical technologies.

3. Development and research. Also known as development research, it is the research that applies basic research and applied research to production practice, and it is the central link of transforming science into productive forces.

Basic research, applied research and development research are three interrelated links in the whole scientific research system, which develop harmoniously in a country and a professional field. Scientific research should have certain conditions, such as a reasonable scientific and technological team, necessary scientific research funds, perfect scientific and technological equipment, scientific and technological test sites, etc.

According to the purpose of research, scientific research can be divided into the following types:

1, exploratory research. Have a preliminary understanding of the research object or problem, so as to obtain a preliminary impression and perceptual knowledge, and provide the basis and direction for detailed and in-depth research in the future

2. Descriptive research. The task of correctly describing the characteristics or panorama of a certain group of people or a certain phenomenon is to collect data, find out the situation, provide information and describe the main laws and characteristics.

3. Explain the method. Explore the causal relationship between a hypothesis and conditional factors, explore the reasons behind the phenomenon, and reveal the inherent law of the occurrence or change of the phenomenon.