Mobile diesel generator set, also known as mobile power station, has innovative design, high mobility, excellent manufacturing and beautiful appearance. The trailer frame of the mobile diesel generator set is made of groove beam butt, and the node selection is reasonable, the strength is high, and the rigidity is good; At the same time, it is equipped with a leaf spring suspension structure. The trailer adopts a height-adjustable bolt-type towing frame, which is suitable for tractors of various heights; It adopts a circular steel pipe butt through axle, which has a compact structure. The four corners of the frame are equipped with mechanical support devices, equipped with inertial driving brake, parking brake and disengagement emergency brake to ensure the stability of the unit under various conditions. The front end of the frame is equipped with support wheels, which have the function of bearing the vertical load of the unit and also have the function of guiding. The vehicle is equipped with steering and brake indicators, as well as standard plugs for tail lights.