Abstract: In view of the problem that vibration monitoring of main pump of water-cooling system inside converter valve in UHV converter station is mainly based on external instruments and devices and lack of internal vibration monitoring means of base, it is difficult to accurately evaluate state of main pump and base, an intelligent monitoring system is designed based on vibration of main pump inside converter valve in the UHV converter station. Firstly, characteristics and vibration problems of internal cooling main pump are analyzed. Secondly, according to the vibration monitoring requirements of the main pump base, the function, overall composition, installation and communication scheme of system are studied and relevant intelligent monitoring strategies are given. Finally, the designed system is compared with the commonly used main pump vibration monitoring scheme to further illustrate its advantages and practical engineering application value.