Boron neutron capture therapyisanewmethod in the treatment of braintumors. Inthismethod,after injecting of the boroncarrier drug anditsabsorptionin thetumor cells,the tumorisirradiated byneutron withanappropriateintensityandenergy. Whenboronneutroncapturereaction's energy is discharged inthetumor cells,this energycandestructit. Up to now differentneutron sources such as; nuclear reactors, various accelerators, radioisotopes, neutron generators, etc.have been used or studied for application in boron neutron capture therapy. Today, anextensive research is being done on the construction of a compact neutron source that can be installed in hospitals. In this project the usage of electron laser accelerators to produce photoneutron for Boron neutron capture therapyhas been evaluated.The typical laser accelerator produces 3× 
 12 10 10 ' type="#_x0000_t75"> electrons per second with average energy of 170 MeV.In order to assess the feasibility of using this accelerator in the boron neutron capture therapy, anappropriate target for photoneutron production was designed and optimized in terms of material and geometry. Keywords: electron Laseracceleration, Photo neutron, MCNPX Monte Carlocode, BoronNeutron Capture Therapy, Beam shapingAssembly.