Nanovesicles known as exosomes have intrigued the scientific and clinical communities’ curiosity. As a messenger that can directly communicate with different and distinct target cells via blood circulation with their membrane associated particles or transport their contents into cells as a direct stimulus, tumour exosomes play an important role in targeted therapy. They are expressed at high levels during tumorigenesis. They serve as a biomarker for the development of cancer. Because exosomes are biocompatible and biodegradable, they can be used in cancer therapy because they are low toxic and immunogenic.