The triboelectric nanogenerator (TENG) is a novel technology that efficiently converts mechanical energy into electrical energy, offering a sustainable and eco-friendly solution for various applications. However, the performance of TENGs is significantly affected by operating temperature, with high temperatures leading to decreased output and instability due to electron thermionic emission and material degradation. This review aims to bridge the gap in the current understanding of high-temperature operatable TENGs (HTO-TENGs) by providing a comprehensive overview of recent advancements and research progress. Key aspects covered in the review include: 1. **Basic Theory and Working Mechanism**: The fundamental principles of TENG, such as contact electrification (CE) and electrostatic induction, are discussed, along with the impact of temperature on these processes. 2. **Recent Advances in HTO-TENGs**: - **Structural Design of TENG Devices**: Innovations in device structure, such as rotating self-standing mode TENGs (R-TENGs) and core-sheath TENGs, have been developed to enhance performance at high temperatures. - **Polymer-Based Tribo-Materials Structure Design**: Chemical and physical structure designs of polymer tribo-materials (PTMs) are explored to improve thermal stability and electrical output. - **Gel-Based TENGs**: The development of ionogel-based TENGs with enhanced thermal stability and electrical performance is discussed. - **Carbon-Based TENGs**: Research on carbon-based materials, including carbon nanotubes (CNTs), for improved TENG performance at high temperatures. - **Metal–Organic Framework (MOF)-Based TENGs**: The use of MOFs in TENGs to enhance their functionality and stability at high temperatures. 3. **Future Research Prospects and Design Strategies**: The review concludes with insights into future research directions and proposed design strategies to further advance the field of HTO-TENGs. The review highlights the importance of structural durability and electrical output stability in challenging environments, emphasizing the need for continued research to overcome the limitations of current TENG technologies.The triboelectric nanogenerator (TENG) is a novel technology that efficiently converts mechanical energy into electrical energy, offering a sustainable and eco-friendly solution for various applications. However, the performance of TENGs is significantly affected by operating temperature, with high temperatures leading to decreased output and instability due to electron thermionic emission and material degradation. This review aims to bridge the gap in the current understanding of high-temperature operatable TENGs (HTO-TENGs) by providing a comprehensive overview of recent advancements and research progress. Key aspects covered in the review include: 1. **Basic Theory and Working Mechanism**: The fundamental principles of TENG, such as contact electrification (CE) and electrostatic induction, are discussed, along with the impact of temperature on these processes. 2. **Recent Advances in HTO-TENGs**: - **Structural Design of TENG Devices**: Innovations in device structure, such as rotating self-standing mode TENGs (R-TENGs) and core-sheath TENGs, have been developed to enhance performance at high temperatures. - **Polymer-Based Tribo-Materials Structure Design**: Chemical and physical structure designs of polymer tribo-materials (PTMs) are explored to improve thermal stability and electrical output. - **Gel-Based TENGs**: The development of ionogel-based TENGs with enhanced thermal stability and electrical performance is discussed. - **Carbon-Based TENGs**: Research on carbon-based materials, including carbon nanotubes (CNTs), for improved TENG performance at high temperatures. - **Metal–Organic Framework (MOF)-Based TENGs**: The use of MOFs in TENGs to enhance their functionality and stability at high temperatures. 3. **Future Research Prospects and Design Strategies**: The review concludes with insights into future research directions and proposed design strategies to further advance the field of HTO-TENGs. The review highlights the importance of structural durability and electrical output stability in challenging environments, emphasizing the need for continued research to overcome the limitations of current TENG technologies.