The utility model provides a bubble in simulation oil produces partial discharge's electrode model, it includes the high voltage electrode of insulation box body, high voltage conducting rod, vertical setting, dull and stereotyped ground electrode and bubble formation mechanism, splendid attire submergence high voltage electrode's insulating oil in insulation box body's the sealed cavity, high voltage conducting rod wears to establish on insulation box body's roof, and high voltage conducting rod's lower extreme stretches into in the sealed cavity, high voltage electrode can dismantle ground and connect the lower extreme at high voltage conducting rod, and it includes flat part and the downward protruding bellying of stretching, dull and stereotyped ground electrode perpendicular to high voltage conducting rod, dull and stereotyped ground electrode are located high voltage electrode's below and set up rather than relative and interval, bubble formation mechanism is including seting up perforating hole and the gas piping on dull and stereotyped ground electrode, and gas piping communicates with the lower extreme opening of perforating hole, gas piping carrier gas in to the perforating hole, gaseous between dull and stereotyped ground electrode and high voltage electrode the bubble formation. The utility model discloses can study the partial discharge of bubble accurately, high -efficient.