The application of a new Nanoscale palladium-containing catalyst with magnetic properties in the study of Suzuki-Miyaura cross-coupling reactions under mild conditions has been investigated. The active surface area of this Nano catalyst is enormous due to its structural properties, and as a result, it provides more available catalytic sites, which increases the activity. In this regard, a novel Metal-Organic Framework Contiguous to Magnetic Carbon Nanotubes consisting of supported 1,10-phenanthroline-2,9-dicarbaldehyde (Fe3O4@CNT/Cu(BDC)-NH2-PHD) has been fabricated by post-synthetic modifications of Fe3O4@Cu(BDC)-NH2. Subsequently, the prepared nanocomposites were modified using palladium chloride ions (Fe3O4@CNT/Cu(BDC)-NH2-PdPHD) to impart catalytic sites. As a result, the fabricated magnetic porous catalyst exhibited catalytic activity in Suzuki-Miyaura cross-coupling reactions. Some of the essential advantages of the synthesized catalyst are; high catalytic activity, short reaction times, mild conditions, high thermal stability, and reusability. Moreover, his porous magnetic nanomaterial can be used as a new support to immobilize other metals in different catalytic reactions.