In my Dissertation, I have looked into the trading at one of the favoured financial markets in the world – the so called FOREX trading. I have concentrated on the issue of the currency pair EURUSD trading. In the theoretical part, the history, development and rules of financial instruments trading, specifically currency pairs, are introduced. In the practical part of my Dissertation, I will present a simple trading system that is realized by the means of the MT Fix platform provided by the company called X-Trade Brokers Dom Maklerski S.A. The strategy will be adjusted to the daily trading of the EURUSD currency pair. The aim of the practical part is to create a simple profitable system that will be tested on real data between September 1, 2011, and December 31, 2012. To conclude the Dissertation, I will perform a simulation of actual trading in order to verify the functionality and profitability of the established strategy. The trading will be carried out between January 1, 2012, and February 29, 2012.