Abstract: Parallel coordinates technique is an important analysis tool in information visualization.It provides an intuitive way to visualize the multidimensional data on two-dimensional space.In this paper,an approach of financial data visualization based on the gravitational field clustering is proposed.Firstly,self-organizing map（SOM） is used to classify the raw financial data;therefore each class of data contains specific economic significance.Then the gravitational field theory is used to congregate fold line in each class and meanwhile to set the exclusion between the classes.Finally,the visualization results are enhanced by setting the opacity and interaction.The experimental result shows that the proposed method forms a clear visual clustering result and discovers the variation law of data.