摘要:The paper analyzed the impact of earnings quality (EQ), debt maturity, investment efficiency (IE) of listed companies on Vietnam stock market thanks to the regression methods of FEM, REM and GLS and data of enterprises in the period of 2010 - 2018. The research findings have shown that EQ and debt maturity have a positive impact on EI, in which EQ has a stronger influence than debt maturity. A review of both EQ and the debt maturity for overinvestment or underinvestment indicated a positive impact and the stronger impact on overinvestment. Based on the research findings, the authors have put forth several recommendations for investors, businesses and policy makers.