This paper investigates the fixed lookback option pricing based on B-S model and Monte-Carlo simulation and tries to demonstrate the comparative advantage of fixed lookback options over plain vanilla ones. In order to achieve the goals, we give out the methodology that is used and the three scenarios which can prove the advantage of fixed lookback option. Besides, the Sensitivity analysis is applied to evaluate the effects of various variables on the option price. Overall, these results shed light on guiding further research focusing on option pricing.