The book entitled Plant Secondary Metabolites” is divided in 11 chapters with broader headings which include introduction, History, Biosynthesis, Essential Oils/Terpenes/Terpenoids, Alkaloids, Glycosides, Gums & Mucilages Oleoresins, Plant amines, Techniques and Biotechnological approaches. 45 tables, 60 figures, chemical equations and colour photographs have been used to make the information useful for under-graduate and post-graduate students of agriculture, ayurveda, pharmacy, naturopathy and home sciences to enrich their knowledge is not only scare but is also scattered and hence an attempt has been made here to provide the best available information to students, researchers and faculties in resembling disciplines under one roof.