Abstract: In agent-based computational finance (ACF), finance market is treated as a comp lex adaptive system and agent-based approach is used to bottom-up model the pr ocess where the micro interactions between individuals lead to macro features of market. The agent-based computational model is simulated on the computer to pr obe into the complex dynamics of finance market by the roots. As a new study pat tern, ACF not only contains the traditional finance theories, but its simulation results show statistic features similar to actual time series. This paper intro duces ACF's background, research course, current state and possible trends in th e future.