In recent years, porous materials used in orthopaedic implants and medical applications had a substantial progress. So, investigation on these materials for improving their action and reaction capability with alive tissue and modern methods in construction of these composites are developing. The litreture in this field has been focoused on the investigation of porousity in the porous nano hydroxyapatite NiTi composites constructed with the use of spark plasma sintering and reaction of these composites with alive tissue in the simulated solution of the human body. In this research, the mechanical properties of porous nano hydroxyapatite NiTi composites such as hardness, corrosion and compression resistances is studied. To do so, at first, alloying of nano hydroxyapatite NiTi powder is done. Then, the nano composite is syntesised using spark plasma sintering followed by characterization of the samples with use of corrosion, shear punch, hardness and compression tests. The results showed that increasing the cooling time led to decrease the corrosion rate (approximately 18 times) and porosities, increase the hardness, compressive strength and resistance to crack creation. Keywords: Spark Plasma Sintering, Shape Memory Alloy, NiTi-Nano HA, Porous Materials, Implant.