Abstract: With the development of the theory and observation techonlogy on gravity field modeling,3D visualization has become a useful tool to analyze the changements and characters of the graviy field models in series.3D visualization of gravity field models based on the data mining method is an innovative research direcion.In this contribution,pivotal technologies of the 3D visualization of gravity field models using data mining method are discussed,and a corresponding 3D visualization system,WHU-3Dgravity is designed and developed.