Abstract: A goaf may cause secondary geological disasters, such as surface subsidence deformation, fragmentation and even collapse, and consequently results in extensive deformation or even overhanging of buried pipelines easily. In this paper, X70 pipeline was taken as an example. And based on the ideal elastoplastic model, the finite element simulation model for suspended gas pipelines in goafs was established by the finite element software ABAQUS. In this model, the nonlinear characteristics of pipeline and soil, the geometric nonlinearity of pipeline and the physics nonlinearity of soil were taken into consideration. Then, the stress and strain changes of X70 suspended pipeline under different suspended lengths, different internal pressures and different buried depths were analyzed under the joint effect of internal pressure, axial force and external load. In addition, safety evaluation was carried out on the basis of the double failure criterion. It is indicated that the determination of the risk level of the pipeline with different suspended lengths according to the double failure criterion while considering the change trend and rate of stress and strain fully can provide the basis for the integrity management of pipeline in goafs. The internal pressure has more effect on the pipeline failure. Therefore, when the goaf is collapsed, decreasing the internal pipeline pressure temporarily is an effective way to improve the pipeline safety.