Textiles with electronic components offer a portable and personalized approach for health monitoring and therapy. However, there is a lack of reliable strategy to integrate layered circuits and high-density chips on or inside textiles, which hinders system-level functionality and untethered user experiences. Herein, we propose monolithically integrated textile hybrid electronics (THE) on a textile platform, with multimodal functions and reliable performances. The textile system encompasses flexible electrodes, laser-induced sensors, and surface-mount devices, along with double-layer circuits interconnecting all of them. Vertical conductive paths are rendered by liquid metal composites infiltrated into textiles, which allows resistances less than 0.1 Ω while reserving intact textile structures. The assembled THE exhibits endurance to handwashing and crumpling, as well as bendability. We customize a wireless textile patch for synchronously tracking multiple physiological indicators during exercise. Furthermore, a textile band is elaborated for monitoring and alleviating muscular fatigue, demonstrating potential in closed-loop diagnosis and treatment.