Abstarct: Science of physics is applied in a wide variety of fields, especially interdisciplinary topics such as biophysics, health physics, and so on. Electromagnetic radiation has beneficial and harmful effects on human life. Therefore, the discussion of the effects of electromagnetic waves on live cells has of particular importance, which can be considered beneficial or harmful baxsed on the effect on the healthy tissue or cellular microorganisms.In this thesis, we study the effect of ultraviolet waves in the UVC region on living cells. In spite of the dangers of using ultraviolet waves, our knowledge development can provide us a tool to better utilize these waves to improve the living conditions. With this attitude, the effects of these waves on bacteria, molds and fungi, and so on, are studied in food. We can hope to develope by applying UVC radiation techniques and methods for replacing unauthorized chemicals in the food industry. Because the use of chemicals as preservatives, flavors, and dyes in the food industry creates mischief effects like dangerous diseases such as cancer, digestive problems, Respiratory problems,and so on.