The book "Thermomechanics of Composite Structures under High Temperatures" by Yu. I. Dimitrienko offers a comprehensive analysis of the thermomechanical properties of composite materials and structures at high temperatures up to 3000 K. It discusses innovative models that take into account internal physicochemical transformations such as thermal decomposition, sublimation, and melting. This research is crucial for the development of new thermally stable materials as well as for investigating the reliability and fire safety of composite structures. Additionally, the interaction of composite materials with laser radiation and the design of thermal protection systems are addressed. The book also includes useful calculation methods for determining the effective mechanical and thermal properties of matrices, fibers, and various composite materials reinforced by dispersed particles or textiles.