The diagnosis process and disposal method of abnormal vibration on bearing no.2 of unit no.1 in Heze Power Plant has been presented. From abnormal vibration occurred on bearing no.2 in October

2002 to additionally installing balance weight onto the rotor in May

2006

through continuous analysis and disposal during the time of more than three years

and starting with increasing dynamic stiffness of the bearing pedestal

the vibration of bearing no.2 has been controlled to below the alarm value and the vibration trouble of bearing no.2 being basically solved.