A partial discharge measurement system comprises a partial discharge detector, a superhigh frequency sensor, a voltage phase gauge, a first digital oscilloscope and a second digital oscilloscope. The first digital oscilloscope is in circuit connection with the superhigh frequency sensor. The second digital oscilloscope is in circuit connection with the partial discharge detector, the superhigh frequency sensor, the first digital oscilloscope and the voltage phase gauge. The partial discharge measurement system can achieve detection and localization to partial discharge, is strong in anti-interference capacity, high in sensitivity, safer to secondary equipment and personnel due to a non-contact measurement mode, simple in structure, and specially suitable for online detection, thereby having remarkable advantages compared with other methods.