Monetary policy occupies basic role in influencing economic activity, depending on the nature of the economic system, its advancement level, the central bank independency, and the used monetary tools. Due to the various nature of the Iraqi economic policies, this research obtained Tobin's theory of investment, on the channels of transmission of monetary policy represented by the channels of (money supply, exchange rate, interest rate, and inflation rate) through investment spending on the stock prices of Baghdad Soft Drinks Company for the period (2007-2021). The research adopted the inductive approach. The modern statistical programs (Eviews12, Stata15) were used to analyze the quantitative data and to analyze the channels of transmission of monetary policy on Baghdad Soft Drinks Company's stock prices. The SEM model and path analysis were used. Results showed that there is a significant effect rate of inflation, interest rate, and money supply on Baghdad Soft Drinks Company's stock prices, while there was no significant effect of exchange rate. The research recommends paying attention to the rules of transmission channels of monetary policy because the impact of monetary policy cannot reach economic activity except through those channels.