The invention relates to an oil-gas well fracturing fluid used in a high-temperature stratum at 180 to 200 DEG C in an ultrahigh temperature compression fracture stimulation technique. The technical proposal comprises: the raw materials used by the fracturing fluid comprise the following components in percentage by weight: 0.3 to 0.6 percent of thickening agent, 0.1 to 0.7 percent of crosslinkingagent, 0.3 to 0.6 percent of clay stabilizer, 0.2 to 0.6 percent of bactericidal agent, 0.1 to 0.4 percent of pH conditioning agent, 0.3 to 0.6 percent of temperature stabilizing agent, 0.2 to 0.7 percent of cleanup additive, 200 to 1500 ppm of gel breaker, 2 percent of potassium chloride, and 94 to 96 percent of water. The high-temperature fracturing fluid adopts high-temperature resistant hydroxypropyl carboxymethyl guargum as the thickening agent and uses a high-temperature crosslinking agent compounded from organic boron and organic zirconium. The fracturing fluid has the advantages of good shear resistance and temperature resistance, good gel breaking effect, friction resistance reduction and low permeability, wherein the viscosity can be kept between 70 and 80 MPa.s after the fracturing fluid is sheared for 120 minutes under the condition of 190 DEG C and 170s<-1>. The fracturing fluid is successfully applied to the Zhuanggu No.63 well of which the stratum temperature is 184.6 DEG C in Shengli Oil Field.