Physico chemical of polymer solutions is structured into three chapters: Chapter 1 is called physical stages and polymer phases; phases and stages transfers, Chapter 2 is called structural properties and polymer and chapter 3 thermodynamics of polymer solutions. Chapter 1 contains subchapters: phase and physical transformations in polymers, crystallization and crystality of polymers, highly elastic state and the glass state. Chapter 2 contains subchapters: polydispersion of polymer, macromolecular chain microstructure and flexibility of macromolecular cathenses. Chapter 3 contains subchapters: thermodynamics of polymer dissolution, thermodynamics of polymer solutions, cologative properties of polymer solutions, phase separations in amorphic polymer solutions, lamination.