Cloud computing has is a popular design in managing world to back up large volumetric details using cluster of commodity computer systems. In spatial data mining, the users have to deal with uncertainties in data and mining process. The nature of uncertainties can be, for example, fuzziness and randomness. With the cloud computing time arrival, spatial data storage and management technology based on cloud computing are getting more extensive attention and application. But under the cloud environment, how to ensure that the data stored in the cloud security will be a serious challenge.