India emerged as 3rd largest start-ups ecosystem, 3rd largest economy on PPP Model and 6th largest economy in the world. The growth of any nation depends upon various factors out of which main concern is related to key issues, problems and their cost-effective solutions taken by start-ups on novation basis. In order to promote such start-ups in India, Government also addresses various changement and introduce new policies and programs like Start-Up India policy 2016, New Companies Act 2013, Consumer Protection Act, (Amendment) 2019, and relaxation of Law and from compliances, self-Certification schemes, and other kinds of financial aids to such start-ups. This article also explains how India improves the ecosystem and built a red-carpet platform from red-tapism by changes of taxation procedures, time taking procedures and dedicated ministry for start-ups and industry and other nine factors as per ease of doing business according to world bank report,2019. Authors here tried to study the start-ups policy and their impact, various Laws, rules & Regulations and growth of start-ups in India on descriptive analysis basis based on secondary data mainly from DPIIT, startupindia.gov.in, various ministry websites and research articles, etc. The study found a positive result of start-ups policy and various Laws on the growth of start-ups and its ecosystem with top 3 cities emerged as Top start-ups are Delhi including NCR, Bengaluru and Mumbai respectively.