Microbiology is about Small creatures, most of which can’t be seen with the naked eye, such as bacteria, fungi, viruses and algae. Collectively, the microbes. It has both microbes, they are useful and they have a penalty. If we eat foods that have been contaminated, It makes us sick. But the microbes are useful to treat us the same. For example, antibiotics are produced by some mold. Or some bacteria. Therefore, we should learn about these microorganisms because these creatures surrounding us in the air, water and food. The study of Microbiology can be divided into 3 major cable. Firstly, the Medical education about the disease to humans and animals from microorganisms, including control, prevention and treatment. Secondly, the industrial inspection quality in industrial Microbe in food. Further study and improve production processes associated with microbes. Finally, the agriculture and to study the disease from microorganisms, plants and animals. Learn to control and prevent the spread of disease by microorganisms. if we have knowledge about these microbes, we will be able to prevent, control or eliminate microbial. Moreover, it can also be useful microorganisms are numerous.