This study aims to determine the effect of the mechanism of Corporate Governance, Audit Quality and Company Size on the integrity of financial statements in construction and building sub-sector companies listed on the Indonesia Stock Exchange (IDX). This study uses descriptive research with a quantitative approach and the data analysis method used is panel data regression analysis with EViews 12. The population of this study is all construction and building sub-sector companies listed on the Indonesia Stock Exchange in 2017-2021. The sample was determined based on the purposive sampling method, so that a sample of 12 companies was obtained. The data collection method uses documentation through the official IDX websitewww.idx.co.id. Based on the results of panel data regression analysis with a significance level of 5%, the results of this study conclude that: (1) Institutional ownership affects the integrity of financial statements. (2) Independent Commissioner, Audit Quality and Company Size have no effect on the Integrity of Financial Statements.