The developing field of nanotechnology is quite exciting. Nanotechnology can be defined as any technology that operates at the nanoscale and has a wide range of applications. A lot of research has been done on nanomaterials. One area of this research is nanocomposites. They need the mixing of two distinct materials, each with unique features, and at least one of the resulting materials must be nanoscale in size. Polymers The new family of sophisticated materials known as polymer carbon nanotube nanocomposites has several uses in both industry and medicine. Because adding nanometric inorganic chemicals to polymers can improve their properties, there are several uses for doing so. These objects have very high mechanical, electromechanical, and thermoelectric qualities. This study discusses Magnetic Polymer Nanocomposites and Their Uses. Polymeric Matrix, Magnetic Approach, nanocomposites, polymer nanocomposites, applications. 1346-1350 Issue-4 Volume-9 Dr. Nikita Sharma | Dr. Mangal Chand