The term used for the analytical assessment of various types of solvents and compounds is UV- Vis spectroscopy for the past 37 years, UV- Vis visible spectrometers is typically chosen, especially by small-scale enterprises, because the equipment is less expensive and has less maintenance issues. The analytical approach is based on evaluating the monochromatic light’s absorption by colorless substances in the near ultraviolet path of spectrum (200-400nm). The process required to ascertain the “identification, strength, quality and purity” of such chemicals is included in the pharmaceutical analysis. Additionally, it covers the study of starting material and in the production of pharmaceuticals. This paper describes the various applications of UV spectroscopy qualitatively as well as quantitatively.