Abstract: Reversible Logic is a growing importance to many future technologies such as optical and quantum computing. Today`s computer dissipates energy while performing any logical operation. However according to thermodynamics law no energy can be lost rather than can be moved to another. As a result heat is produced and system may be overheated. To overcome this constraint, many researchers introduced Reversible Logic paradigm. This paper presents some basic Reversible Logic gates and also presents some innovative ideas to retrieve the original information from the output of a gate. As a result no information will be lost.