The utility model discloses an oval insulation block who presss from both sides core belongs to the building field, including three left hornblocks, middle heat insulating block and three right hornblocks, three hornblocks on the left side the same with the structure of three right hornblocks, the terminal surface of three left hornblocks and the one end fixed connection of middle heat insulatingblock, the terminal surface of three right hornblocks and the other end fixed connection of heat insulating block, three left hornblocks differ 180 with the rotation angle of three right hornblocks, middle heat insulating block include concrete shell, oval thermal insulation core sandwich, concrete shell be rectangle chamber shell, all open the OVAL groove who is used for fixed oval thermal insulation core sandwich with chamber top at the bottom of concrete shell's chamber, oval thermal insulation core sandwich block lies in and is provided with circular support frame between oval thermal insulation core sandwich and concrete shell's the inner wall between two OVAL groove, the structural style of heat insulating block in the middle of the subassembly collocation about having adopted, collocation can concrete shell 0 connection wall body about, in its easy equipment in the use.