Abstract: Heavy oil reservoirs in No. 2 Oil Production Plant are featured by "super depth, super thickness, high density, high viscosity, high asphaltene-containing colloid, high hydrogen sulfide content, and high salinity", which makes production difficult. Pump is the main machine for lifting, so it is very important to guarantee its normal working conditions. Current is an important parameter reflecting pump conditions, and its fluctuation reflects oil production and pump condition intuitively. This paper analyzed pump current fluctuation characteristics and proposed some countermeasures, which provided a basis for the stable production of pump in the future.