Trailer power station consists of diesel generator units and trailier, of which have four types as single bearing, dluble bearing, daul wheel and four wheels according to the power difference, The power station is in complying with vehicle running safety and technical condition as well as various relative requirements of general technical condition of altered current industrial frequency power station.It has good sealing characterisic and safety performance.It undertakes rush load in change-frequency place and it is a good emergency power.