Mud volcano cones on the Wu-Shan-Ding in Yen-Chao village, Kaohsiung County, are one of the most spectacular landscapes in Taiwan. Whether those cones are suffered from recent rainstorms is highly concerned from a conservative perspective. Using a Ground-based Laser Scanner, this study tried to establish the digital elevation model (DEM) of these cones to quantify such parameters as size, profile and height of cones. The recent DEMs were compared with that acquired on Jan. 27, 2007 to analyze the shape change of these cones. The result showed that the dormant mud volcano has been decreased in height in the past three years while the active one remained unchanged. In the geomorphic system of mud volcanoes, the morphology of a mud volcano cone remains stable when endogenic and exogenic forces are in dynamic equilibrium.