Needle-cokes (NCs) were synthesized via a two-step process, namely mesocarbon microbeads (MCMB) were firstly blended with coal tar pitch (CTP) at 180^oC for ca 30 min, and which was then calcined in an autoclave filled with 0.5 MPa nitrogen at 1500^oC for 5 h. The microstructure of mesophase, semi-cokes and the final product NCs was characterized by means of polarizing microscope, XRD and SEM. The resistivity and coefficient of thermal expansion (CTE) were measured by resistivity meter and thermal mechanical analyzer, respectively. The results show that the addition of moderate amount of MCMB could affect the formation of NCs, so that promote the formation of graphite-like layered structure, which significantly reduced the resistivity and CTE value of NCs. The structure of needle-cokes could be effectively improved with the increase of MCMB content (≤50 mass fraction%). However, the quality of needle-cokes began to decline as the content of MCMB exceeded 50%. The resistivity and CTE value (at 0-100^oC) of NCs decreased by 27.9% and 45.7%, respectively, when the content of MCMB is 50% in feedstock, meanwhile, the corresponding graphitization degree increased by 46.2%, as comparing with the parent needle-coke.