To evaluate the vibration environmental adaptability of Tesla-type pulse generator under vehicle transportation condition, simulation and verification test were carried out for the coaxial pulse forming line (PFL) with cantilever support insulators. An equivalent modeling was proposed for the inner and outer magnetic cores with laminated structure. The finite element model was modified according to the modal test results. Thus the effect of insulating oil on the modal frequency and damping of the PFL was studied, the stress and response of PFL under typical transportation conditions were obtained by simulation, and the vibration test of PFL equivalent parts was conducted to verify the simulation result. It was found that the structure of the PFL were nonlinear in the vibration test. The simulation analysis and the vibration test of equivalent parts verify that the existing structure of the coaxial PFL meets the requirements of vehicle transportation vibration environmental adaptability.