This study explores the relation between cash flow and investment in manufacturing industries through a detailed analysis of Tata Steel and Boa-Steel. It includes an introduction, literature review, methodology, and analysis of cash flow position and investment decision of the two companies. The study aims to identify the resources required to increase the development of business operations and to identify the gaps in investment due to lack of cash flow. The study is based on secondary data obtained from various sources of journals, websites, and annual reports of the companies.