The invention discloses a vernier caliper. The vernier caliper comprises a main scale, a vernier, an inner measuring claw, an outer measuring claw, a depth gauge and a stress display device, wherein the stress display device comprises a stress digital display, strain gauges and a strain gauge control mechanism; the stress digital display and the strain gauge control mechanism are both arranged on the vernier; the inner measuring claw, the outer measuring claw and the depth gauge are provided with at least one strain gauge respectively. The vernier caliper has the beneficial effects that a measuring result caused by different deformations of a test sample due to different finger thrusts of a user is avoided, and meanwhile the measuring error caused by extrusion of the inner measuring claw, the outer measuring claw or the depth gauge to an easily deformable object during measurement of the easily deformable object can also be avoided. Thus the consistency of measuring conditions can be guaranteed, and the reliability and the measuring accuracy of the measuring result are improved.