Bidirectional haptic communication devices accelerate the revolution ofvirtual/augmented reality and flexible/wearable electronics. As an emergingkind of flexible piezoelectric materials, piezoelectret materials can effortlesslyconvert mechanical force into electrical signals and respond to electrical fieldsin a deformation manner, exhibiting enormous potential in the construction ofbidirectional haptic communication devices. Existing reviews on piezoelectretmaterials primarily focus on flexible energy harvesters and sensors, and therecent development of piezoelectret-based bidirectional hapticcommunication devices has not been comprehensively reviewed. Herein, acomprehensive overview of the materials construction, along with the recentadvances in bidirectional haptic communication devices, is provided. First,the development timeline, key characteristics, and various fabricationmethods of piezoelectret materials are introduced. Subsequently, followingthe underlying mechanisms of bidirectional electromechanical signalconversion of piezoelectret, strategies to improve the d33 coefficients ofmaterials are proposed. The principles of haptic perception and feedback arealso highlighted, and representative works and progress in this area aresummarized. Finally, the challenges and opportunities associated withimproving the overall practicability of piezoelectret materials-basedbidirectional haptic communication devices are discussed.