The invention provides a method for testing the fracture property of a polypropylene fiber cement stabilized gravel. The method comprises the following steps: proportioning test pieces, measuring a fracture leading edge strain field of each of the test pieces, fracture-cutting, performing complementary cutting, sticking strain gauges, acquiring data through a strain acquisition instrument, measuring the mid-span deflection delta of each of the beam test pieces, performing data acquisition, measuring the load of each of the cement stabilized gravel test pieces and calculating the fracture toughness. The method provided by the invention has the benefits that by adopting the middle beam test pieces as test samples, the discreteness existing in test results can be reduced; the rigidity of a test machine can be ensured during the rigid component test between upper and lower pressure plates of the test machine, and the test machine is prevented from releasing the elastic deformation energy accumulated in a test machine body to the test pieces when the test pieces are fractured, so that after the load reaches a peak value, the corresponding test piece is broken immediately, and a full fracture curve cannot be determined; the test results are high in accuracy and reliability; the test is performed through a three-point bending method, so that the production requirements of the test forthe test machine and the test pieces can be reduced; external influence factors are small.