The invention discloses a grout-rock interface feature test method using an induction splitting grouting device.The test method includes the steps of testing basic physical properties of rock mass to be grouted; assembling a test device; implementing a direction-controlled induction splitting grouting test, wherein the grouting device is connected, the grouting speed of the grouting press machine is controlled, and grout is mainly diffused in the induction direction of a prefabricated structural plane in a direction-controlled splitting mode to form flat grout veins; demolding a grouting reinforcing body; sampling a grout-rock interface feature test piece; curing the sample; analyzing an indoor experiment and a result, wherein the cured sample is tested through a strain control direct shear apparatus and a scanning electron microscope, and the experiment result is organized and analyzed.The test method is convenient to operate, the direction-controlled induction splitting grouting test of the weak cemented rock mass is conducted smoothly, and the grout-rock interface mechanics and morphology feature sample of the reinforcing body is sampled and tested.