The application of suction on a saturated soil specimen consolidated in an oedometer may cause the lateral shrinkage. This study tries to simulate such situation using triaxial testing apparatus and to quantify the lateral deformation due to drying and shearing. Main conclusions are as follows: lateral shrinkage occurs when suction is applied under the anisotropic stress condition, and as the shear stress is raised, the lateral compressive strain, which occurred due to the drying, will reduce and, at some level of the shear stress, it will turn to be expansive.