The purpose of this study is to make a basic Foreign Exchange Market Model. It is important to make a simple basic model at first to understand the complex emergence of exchange rate which is caused by various factors. The model is a multiagent-based model, consisting of dealer and speculator. Both agents' action relies on market trend and their personality, either trend follower/ Contrarian. In this paper, the simulation experiments are done by changing the ratio of Trend Follower and Contrarian. As a result, the complex fluctuation of exchange rate can be observed. The validity of this model is evaluated by the effect between the size of fluctuation and probability.