Three-dimensional (3D) display has gained wide attention for its natural and intuitive performance. Herein, we proposed a finger sleeve haptic interaction method based on a suspended 3D display system. The fingertip coordinates were extracted by Leap Motion and a binocular camera was used to assist the coordinate transformation between light field display area and interaction area. Then, the position relation between the hand and display area was examined and the signal was transmitted to vibrate the finger sleeve, thus the haptic interaction was finally realized. The results show that the proposed method can be used to complete the coordinate transformation between light field display area and interaction area with a transformation precision of within 5 mm. Furthermore, when the user interacts with a 3D display system, the effective and real-time haptic interaction enhances their real sensory experiences.