The work aims to systematically study and analyze the effects of polypropylene raw material selection on the properties of silane crosslinked PP/POE(EPDM) blends. The mass ratio of fixed PP to POE(EPDM) was 70∶30. The mass fractions of added VTMS, DCP and DBTDL were 1.5%, 0.1% and 0.1%, respectively. Silane crosslinked blends with PP-B and PP-H as matrix materials were prepared. The differences of gel content, crystallization behavior, rheological properties, mechanical properties and microstructure between the two blends were studied, and the reasons why different matrix polypropylenes affected the mechanical properties of silane crosslinked polypropylene blends were analyzed. The performance of PP-B was better than PP-H, but PP-H was superior to PP-B in mechanical properties and thermal stability after silane crosslinked with POE(EPDM). PP-B had higher crosslinking degree. In the selection of PP/POE(EPDM) silane crosslinked materials, in order to achieve resource saving and optimal performance, the influence of the type of polypropylene raw materials on the properties of the blended materials should be fully considered to select the optimal solution.