As a branch of haptic interaction technology, wearable haptic interaction technology can provide operators with a more realistic and natural humancomputer interaction experience. In this work, a wearable fingertip haptic interaction device is designed. The device consists of a control box worn on the wrist and a structure worn at the fingertip, and the structure weighs only about 30g with a size of 38 mm×31 mm×50 mm. The device uses linkage mechanism and can realize 3 DOF haptic feedback. The device adopts bluetooth communication and is small, lightweight and easy to wear. The direction perception and recognition experiment indicate that the device can produce 8 effective directional information on the finger pad, and each direction can be correctly perceived by subjects. In addition, the virtual environment interaction experiment proves that the device can help people control the interaction force in the virtual environment and increase the efficiency of humancomputer interaction.