The invention relates to a pipeline defect detection device and data analysis method, which are used for the nondestructive detection of an oil-gas pipeline. The pipeline defect detection device mainly comprises a main body 1, supporting seats 2, angular displacement sensors 3, distance measuring sensors 4, probe rods 5, leaf springs 6, defect sensors 7, a mileage module 8 and a data collection storage transmission module, wherein a plurality of supporting seats 2, angular displacement sensors 3, distance measuring sensors 4, probe rods 5, leaf springs 6 and defect sensors 7 are uniformly arranged on the periphery of a central axis of the main body 1; and one end of each probe rod 5 is fixedly connected to the corresponding defect sensor 7, and the other end of each probe rod 5 is hinged to the corresponding supporting seat 2. By adopting the pipeline defect detection device data analysis method, deformation and defects in the pipeline can be simultaneously detected; moreover, a gap between a probe and the inner wall of the pipeline can be calculated, a defect detection value can be corrected, the accurate recognition of detection data can be facilitated, and the overall detection precision can be improved.