Structural steel reaction frame using Q-235BF steel, chemical composition and mechanical properties that it should comply with the relevant provisions of "GB50017-2003" standard to ensure tensile strength, yield point. Elongation and C, P, S content limit eligibility. All connections are made of fillet welds, weld leg size of 3mm. Weld quality grade two. Welding technology should be consistent with the relevant provisions of "construction steel welding procedures" in. Outstanding issues should be the existing national standard production, transportation and installation. Kinds of precast beam (plate) static load test reaction frame device by the auxiliary beam, reaction force beams, beam distribution, plus a carrier and hydraulic system components. Wherein the reaction force provided by the weight of the secondary beam, oil pressure applied load, you can precast concrete beams (board) is fast and reliable static load test. The device can make the best of the shorter test cycle, improve the economic efficiency is important.