The utility model provides an all-insulation frame integrated capacitor adopting a capacitor unit without a shell. The capacitor includes: a capacitor body; the capacitor comprises an oil tank, a wireoutlet sleeve, a capacitor core body and insulating oil, characterized in that it is characterized in that it comprises;, the capacitor core body comprises an all-insulation frame and a plurality ofcapacitor units arranged in the frame. wherein the capacitor units are in a shell-free form, the capacitor units are fixed in the all-insulation frame through the limiting plates, the all-insulation frame is made of glass fiber composite materials, the frame is connected through the insulation connecting pieces and the insulation bolts, the whole frame is fully insulated, and capacitor oil is adopted as insulation oil. The capacitor unit is not provided with a small shell, the capacitor unit is fixed in the frame through the limiting plate to form a capacitor core, and it is guaranteed that the capacitor unit cannot be disengaged from the frame after being loaded in the transportation or work process. The size and the weight of the capacitor unit can be further reduced, and the purpose ofreducing the size and the weight of the whole capacitor device is achieved.