The work aims to propose a method based on PDMS to fabricate the cushion package for aviation engine bearing, in view of the defect that the current main shaft bearing of the aviation engine has no cushion package. According to the reference, the two-component PDMS was matched, the data were obtained through static compression test, and the buffer coefficient-stress curve of PDMS cushion pad was drawn. Then, the minimum thickness value of the cushion pad was calculated. Based on this, the aviation bearing was poured and packaged. The feasibility of making cushion pad from PDMS material was verified through the drop test of simulated products during transportation. The impact acceleration of the bearing was less than 1.1 km/s2 when the PDMS cushion thickness was 30 mm. The method can provide protection for aviation bearings.