Abstract: As a special pharmaceutical dosage form, injectable products have the advantages of quick onset of action and accurate positioning, and thus have been widely used in clinical practice. With increased clinical demand, many novel injections have been developed on the basis of traditional injections. The emergence of novel injection delivery systems such as liposomes, suspensions, nanoparticles, microspheres and inclusion complexes not only reduces drug degradation in vitro and in vivo but also achieves sustained and controlled release, receiving close attention from researchers. This article focuses on the characteristics of several novel injections and briefly introduces novel injections that have been marketed or under clinical development at home and abroad, so as to provide reference for their further development.