Multi Level Marketing (MLM) is a Business opportunity that is known to all over the world. MLM Company plays an important role directly or indirectly in our economy. Performance of MLM companies can be explained by stochastic Modeling. So to construct a complete picture of MLM Companies activities in terms of their earning pattern and distributor enrollment in their business we have to explore stochastic modeling. For this perspective this book concerned with the Branching Process to see the distribution of down line distributors and the probability of ultimate extinction. This book also linked up with the Markov Chain Estimation for establishing the profit of MLM Company. In this book try to show a comparison between Markov Chain Estimation using Monte Carlo simulation and Markov Chain Estimation using MCMC simulation. Finally make a conclusion about the taking decision of a distributor or a new investor for the investment of capital into a right company.