Whether to use quotation marks in writing a paper under the background of double carbon mainly depends on the content and expression. On the one hand, if you quote other people's opinions, theories or experimental data, you should use quotation marks to indicate the difference, and indicate the specific source and source of the quotation. On the other hand, if it is a summary, description or generalization of existing research results, it should follow academic norms and the principle of good faith to avoid plagiarism. When writing a thesis, it is suggested that references should be affirmed, academic integrity and innovative thinking should be emphasized, and relevant materials should not be copied, registered or forged to avoid being adversely affected by academic misconduct.