The invention discloses a permanent magnet composite which is composed of three alloy materials A, B and C and an inorganic composite D according to the weight ratio of A to B to C to D being 1.2 to 1to (0.1-0.6) to (0.01-0.05). Through material mixing and press forming, a blank is placed in a sintering furnace to be sintered under the protection of argon, the temperature is first raised to 500-750 DEG C and then kept for 3-4 hours, then the temperature is raised to 1050-1090 DEG C for sintering for 3-4 hours, cooling is conducted to the room temperature, two times of tempering treatment including thermal treatment tempering at 880-900 DEG C and thermal treatment tempering at 530-560 DEG C for 1-2 hours are conducted, and finally aging treatment at 180-220 DEG C is conducted to obtain thepermanent magnet composite.