Corporate managers have an incentive to overstate their financial performance by delaying bad news and disclosing good news faster in the hope that their poor performance will be covered by better performance in the future. Such behavior of managers has been confirmed in empirical studies. Thus, the purpose of this research is to investigate the relationship between managerial short-sightedness and the risk of falling stock prices with the effect of the auditor's opinion type. The statistical population of the research of companies admitted to the Tehran Stock Exchange, the systematic elimination sampling method and the studied sample, includes 85 admitted companies during the years 1397 to 1401. The descriptive-survey research method is a combination of causation-correlation in terms of the relationship between variables, and it is practical in terms of its purpose. Regression method, panel data and fixed effects model were used to process and test the hypotheses. The results obtained from the analysis of the hypothesis showed that the type of auditor's comment has a negative and significant effect on the relationship between managerial short-sightedness and the risk of falling stock prices at the level of 5% error.