The microscopic morphology and microstructure of the phase between the dilution zone and the clad zone in laser remelting NiCrBSi/TiN layer on Ti-6Al-4V alloy surface were characterized by use of scanning electron microscope (SEM) and transmission electron microscope (TEM). The experimental results show that the microstructures between the dilution zone and the clad zone are Ti-Ni, Ti-Cr intermetallic and Ti-N compounds. The Ti and Ni atoms of Ti-Ni and Ti-Cr intermetallic compounds are replaced partly by Cr, Al etc., forming Ti2Ni, TiNi and Cr2Ti type intermetallic compound during laser remelting. Honeycomb structure exists in the Ti2.6Ni1.33 between Ti-N with maximum size around 40 nm and minimum size around 10 nm.The origin is that “gas mass” can not escape and keeps in the microstructure under rapid solidification.