Inflatable membrane structures are large, the test process is dynamic and can't be realized by general measure methods. So it's more appropriate to obtain the test data through the method of photogrammetry. The coordinates of the measuring points in the membrane surface can be obtained by using photogrammetry principle, and the overall deformation of inflatable membrane structure can be simulated through the displacement of measuring points. Result of the test has the same trend with the theoretical results, so the test method and analysis of data processing in this paper has a certain reference value.