The invention relates to a composite brazing filler metal layer for brazing ceramic and alloy, and belongs to the field of brazing filler metal. The brazing filler metal comprises a double-layer CuTiZrNi amorphous brazing filler metal and a foam Cu intermediate layer, and the foam Cu intermediate layer is filled between the double-layer CuTiZrNi amorphous brazing filler metal, and the atomic percentage of the CuTiZrNi brazing filler metal is Cu: 41.83, Ti: 30.21, Zr:19.76 and Ni:8.19. A foam Cu intermediate layer is added into the CuTiZrNi amorphous brazing filler metal, the brazing temperature is kept at 910 DEG c for 20 minutes, plastic deformation is generated between the brazing filler metal and the foam Cu intermediate layer,and the brazing filler metal and the foam cu intermediate layer are in close contact with each other, the surface of the base material is wetted, so that part of the base material is also dissolved in the molten brazing filler metal, a staggered structure isgenerated, so that the mechanical property of the ceramic and alloy connectivity is improved, the bonding strength of the interface is improved, the stress is effectively released, the cracking tendency is inhibited, so that the weld joint has good joint performance, and the negative influence of the hardening and the ductility of the braze welding head on the bonding strength is avoided;