The invention relates to roll gap adjusting equipment and a roll gap adjusting method. The equipment is used for adjusting the roll gap between a first roll and a second roll, and comprises a roll gapadjusting unit, a driving transmission unit, a position detecting unit and a control unit, wherein the roll gap adjusting unit is used for mounting and driving the second roll to move relative to thefirst roll to be close to or far away from the first roll to adjust the roll gap, the driving transmission unit is in transmission connection with the roll gap adjusting unit, generates driving forceand transmits the driving force to the roll gap adjusting unit so as to drive the second roll to move relative to the first roll, the position detecting unit is used for collecting a position signalof the second roll, and the control unit is used for receiving and processing the position signal and feeding the processing results back to the driving transmission unit so as to control the drivingtransmission unit to drive the roll gap adjusting unit to move. The automation and intelligentization of roll gap adjustment are realized, and the roll gap adjusting accuracy is improved.