This book investigates in detail the concepts and principles of green chemistry and related methodologies, including green synthesis, green activation methods, green catalysis, green solvents, and green design to achieve process intensification while at the same time ensuring process safety and promoting ecological civilization and environmental protection. Moreover, it incorporates elements of chemical management and chemical education, highlighting chemists' responsibility to protect humankind and foster green and sustainable development in chemistry. Combining Chinese and Belarus wisdom, this book is intended for those working in the chemical industry who are interested in environmental protection and sustainable development, as well as undergraduate and graduate students who are interested in green chemistry and related technologies.