The invention provides a reproducing power regulation method, optical information recording/reproducing unit and information recording media. In the optical disc super-resolution technology, along with non-uniform medium optical absorption ratio, and different reproducing conditions such as reproducing linear velocity and surrounding temperature, the optimum reproducing powers are also different, in order to obtain optimum reproducing signal, reproducing power regulation is required to perform in the reproducing movement. The reproducing power regulation is performed by using signals and medium specific parameters that can be obtained in the reproducing movement, when the medium specific parameters are taken as the fixed value to perform reproducing power regulation, the optimum reproducing may not be realized. By referring to a table of reproducing conditions and medium specific parameters, stored in an optical disc or optical disc apparatus and/or generated by the optical disc apparatus, the medium specific parameters to be used for performing reproducing power adjustment are changed in accordance with the reproducing condition to execute reproducing power adjustment.