On what is based the technical analysis and which are the differences to the fundamental analysis?. Market force produces changes on foreign currency prices, the technical analysis function is to say what happens when foreign currency has moved, not to analize which are the causes of these variations. Traders that operate in forex are based on the technical analysis and on the fundamental one, although the most practical one is the technical one as the principal problem of the fundamental analysis is that it needs a detailed knowledge of political and economic issues of a great amount of countries and, for most of traders, this is simply not very practical. The technical analysis has the advantage that it can be applied to many markets and foreign currencies at the same time.It is necessary to consider that technical analysis can not be done by anyone, if you are a beginner in this market is nos advisable to use the technical analysis to develop an investment strategy. It is required to have some experience and knowledge to do a technical analysis, as this is based on graphics that show the market trend. This kind of analysis is very useful and most of the traders use them to develop a plan investment, this means that market time sometimes does not need to take decisions fastly to raise our profits.