The invention discloses a high-performance concrete extrusion partition plate connection member and a preparation method, comprising the following raw materials: cement, gesso, fly ash, quartz sand, mekralon, water reducer, water-retaining agent and water. The raw materials of the connection member, after mixing and stirring, are orderly extruded by a high pressure and vacuum extruder. The partition plate connection member prepared through forming treatment and twice maintenance treatment has high intensity, and an ultimate flexural capacity and compressive strength exceeds a government standard. The connection member has advantages of small drying shrinkage, low expansion and contraction ratio, high distortion-resistant performance, aging resistance, water proof, fire proof and sound insulation. After the connection member is connected with the partition plate, no crack and no shedding are generated between the connection member and the partition plate, and the connection member accords with installation requirement, and reaches requirement of a government standard of lightweight batten for construction (GB / T 23451-2009).