Measuring method for spatial variation of test sample

The invention discloses a measuring method for the spatial variation of a test sample. The method includes: firstly, a plurality of measuring nodes are selected at the test sample, and the internal spatial value of the test sample before a test can be obtained; then the displacement variations of each node in the X, Y and Z directions are measured by employing conventional guyed displacement sensors of a test room, the internal spatial value of the test sample after the test can be obtained via the displacement variations of each measuring node; and finally, the internal spatial variation of the test sample is calculated and obtained. According to the measuring method, measured parameters are analyzed, the intensity and rigidity performance indexes of the test sample can be determined, the method is simple and effective, and the accuracy is high.