The utility model belongs to the field of 10kV distribution overhead lines, and more specifically relates to a compact insulation support. The compact insulation support, comprising cross arms fixed to a rod tower, is characterized in that each cross arm at each side of the rod tower is equipped with three overhead insulation wire hanging points that are arranged in a horizontal manner, and three-insulation wires of each overhead line are respectively fixed to the three overhead insulation wire hanging points. The compact insulation support is ingenious and reasonable in structural design. Through application of the support, the three-phase insulation wires A, B and C of each overhead line can be arranged horizontally on the rod tower, so that the vertical space is less occupied, the height of the rod tower (especially a steel pipe rod) is reduced, a lot of steel is saved, the construction cost is lowered, and economical effects are greatly improved. Meanwhile, it becomes more feasible that multiple 10kV overhead lines stretch across 35kV or 110kV lines or lines with higher voltages, and safety distances become greater.