The most fundamental parts of the building are the beam-column joints on the reinforced concrete (RC) frames. Joint shear failures cause complete failure of the RC structures especially the building that constructs under the seismic region. Thus failure were created due to non-seismic design and non-ductile achievement to beam-column joints so such beam-column joints must strengthen and change shear failure of the joint to flexural fail of the beam was more advisable. This thesis works on numerical investigations of exterior beam-column joints by using basalt fiber-reinforced polymer (BFRP) composite to strengthening and improving the performance of external RC beam -column joints with seismic loading. The verification analysis was done with the experimental study reported in the literature by using the ANSYS19.2 software package. The parametric investigation were studied on necessary variables such as lateral beam cross-sectional size, diagonal inclined crossbar at joint, yielding strength of reinforcement, compressive strength of concrete, number of BFRP layers, BFRP fiber orientations, and BFRP layer configuration was executed to get the adequate seismic resistance of exterior beam-column joint. From non-linear finite element analysis (FEA), results showed as 100% lateral beam cross-sectional size coverage achieved 180.54% increment in ductility index as compared with control spacemen. In addition, using ∅16mm diameter diagonal inclined crossbar at joint resulted in a 145.6% higher ductility index than the control specimen. The S-540 yielding strength of reinforcement showed as -79.76% increments in ductility index as compared to S-428 control specimen. This show as increasing the yielding strength of reinforcement the ductility behavior of exterior joint was decreasing. The C-45 compressive strength of concrete indicates as 227.56% increments in ductility index as compared to C-25 control specimen. This shows as increasing the compressive strength of concrete achieved more ductility behavior on exterior joint. Compared to the BFRP with one layer control specimen, the four-layer BFRP composite had a 102.84% increase in ultimate load capacity, a 45.43% increase in yield load, and a 306.55% increase in ductility index. Use diagonal inclined cross bar at joint, 45 0 BFRP fiber orientation, and 30ᵒ/30ᵒ/45ᵒ/45ᵒ BFRP layer configuration to change the mode of failure types from the shear failure of joint to the flexural failure of the beam. Keywords: Beam-Column Joint, Seismic Load, Finite Element Analysis (FEA), Ductility, Basalt Fiber-Reinforced Polymer (BFRP).