In this paper, we propose a novel reconnaissance modular type robot having changeable contact surface using magnetorheological fluid to increase grip force. This proposed changeable contact surface in the gripper of each module can change the surface shape similar to terrain or obstacle shape using MR fluid. After this surface altered like obstacle shape, we can generate the magnetic field by applied voltage and control the shear stress to increase grip force. Through the field experiments, the designed module is validated to overcome various obstacles.