HIV replication is defined as the multiplication of the virus in host body.HIV replication is carried out is seven steps they are: Viral entry, Reverse transcription, Nuclear import, Integration, Assembly, Budding, Maturation. HIV can only replicate itself in human body. HIV once entering into host cell using the reverse transcriptase enzyme transcripts RNA in to DNA and then integrated in to the CD4 cell DNA, HIV uses the body of CD4 cell to make long chains of HIV proteins. Proteins are the building blocks of HIV and thus it is replicated.