This book comprehensively introduces the basic knowledge and basic methods of water quality analysis, systematically introduces the meaning and measurement methods of main water quality indicators, and focuses on the cultivation and training of basic knowledge, basic concepts, basic principles and basic skills. This book is divided into thirteen chapters, focusing on a detailed introduction to the principles, structures and applications of the four major titration analysis methods (acid-base titration, complexometric titration, precipitation titration, and redox titration), absorption spectrometry, atomic spectroscopy, electrochemical analysis, chromatographic analysis, mass spectrometry, and nuclear magnetic resonance Pop method. This book combines the basic theories and practical issues of water quality analysis, and adds corresponding thinking questions and exercises after each chapter to consolidate students' mastery of knowledge points and enhance students' ability to apply them in practice. This book combines teaching practice and arranges some experimental contents to facilitate actual learning and operation.