Abstract
The research seeks to study the nature of the relationship between private and public investment and their impact on economic growth in Malaysia for the period 2000-2021. The economic measurement for this research took two stages, the first dealt with the time series stationarity test and the cointegration test using the (ARDL) method, while the second stage was devoted to measuring The relationship between the research variables in the long and short term using the random error correction model (ECM) and then measuring the causal relationship between the research variables. The research found that there is a negative relationship with a significant effect between both public and private investment spending and the economic growth rate in Malaysia, and the existence of a significant positive relationship between total capital accumulation, and the total labor force with the economic growth rate in Malaysia. The research recommended working to develop the performance of local investments and increase their efficiency and integration with public investments.
