Advantages:
1. Convenient and efficient: literature research does not need to carry out experiments or collect data, but only needs literature collection, screening, reading and analysis to obtain a large number of research results and information, which can save time and cost.
2. Wide scope: Literature research can cover a wide range of research fields and topics, and can obtain the research results and experiences of predecessors, providing theoretical support and reference for their own research.
3. Theoretical basis: Literature research can provide theoretical basis and guidance for research, help to sort out research ideas and clarify research direction.
4. Strong applicability: Literature research is applicable to various disciplines and research types, such as literature, history, sociology, psychology, medicine, etc.
Disadvantages:
1. Limitations: Literature research can only be carried out through existing literature materials, and new data and information cannot be obtained, which has certain limitations.
2. Uneven quality: There are a large number of documents in literature research, and their quality and reliability are uneven, so it is necessary to screen and analyze them.
3. Subjectivity: Literary research involves many subjective factors such as researchers' reading, understanding and evaluation, and is easily influenced by personal subjective consciousness.
4. Can't replace empirical research: Literature research can't replace empirical research, but can only be used as an auxiliary means of empirical research.
In a word, the literature research method has the advantages of convenience, high efficiency, wide range, theoretical basis and strong applicability, but it also has some shortcomings, such as limitations, mixed good and bad, strong subjectivity and being unable to replace empirical research. In the specific research, it is necessary to choose appropriate methods to carry out the research according to the research purpose and demand.