<p>Ionogels, with their combined properties of flexibility, excellent ionic conductivity, and biomechanical characteristics similar to biological tissues, have become key materials in flexible electronics, exhibiting enormous application potential in fields such as health monitoring and smart wearables. However, ionogels are susceptible to mechanical damage. Under large deformations and continuous mechanical loading, structural damage and device failure are inevitable. Self-healing ability can significantly improve the reliability, service life, and safety of devices. This review discusses the latest progress in self-healing ionogels, covering self-healing mechanisms, as well as the design, preparation, and applications of various ionogel-based flexible electronic devices, including wearable sensors, flexible triboelectric nanogenerators, supercapacitors, flexible displays, and soft robots. Furthermore, based on the self-healing mechanisms of ionogels and the design and manufacturing of related products, we put forward perspectives on the development of flexible electronics. This review is expected to accelerate the development of self-healing ionogels in the applications of various flexible electronic devices.</p>