Enzymes are biological catalysts which accelerate the chemical reactions in living things without being consumed. A catalyst is a material which builds a chemical reaction goes faster, without itself being altered. A catalyst can be utilized again and again in a chemical reaction: it is available again for same function. Enzymes are exceptionally the same apart from that they are simply denatured by heating. This book discussed about the history of enzymes, Production criteria, biotechnology, classification, Kinetics and Enzyme applications. Enzyme biotechnology involves the utilization of microorganisms such as yeast, mold or bacteria, and enzymes to make goods and services is a promising field in modern biotechnology. I am looking forward to work in a professional and competitive environment where It can put my best efforts, hard work and skills to bring up the organization and myself too. I am also a life long learner and am determined to become a knowledge professional for keeping abreast with changing technology.