In today's business world, companies need appropriate solutions to better use their resources and resources to solve their economic problems. One of the important solutions is the expansion and development of investment. Also, for the development of investment, it is necessary to pay attention to the reasonableness of IFRS reporting. The purpose of this research is the impact of corporate governance and IFRS on the relationship between financial reporting quality and investment efficiency. According to the analyzed content, the research is applied in terms of purpose and descriptive-correlation in terms of data collection. The statistical population of this research is all the companies admitted to the Tehran Stock Exchange and the research period is 1394 to 1402. The number of investigated samples is 144 companies, and the sample selection method is screening (targeted). In this research, raw data was first extracted from the financial statements and accompanying reports and other information sources mentioned for each of the companies in the research years, and Excel software was used to summarize and sort the data; Finally, for the purpose of data analysis, Eviuse software was used. The results of the hypothesis test showed that there is a significant inverse relationship between the quality of financial reporting and investment efficiency. Also, corporate governance and international financial reporting have an effect on the relationship between the quality of financial reporting and investment efficiency.