The invention belongs to the technical field of aluminum matrix composites and discloses a ti-based metal glass particle reinforced aluminum matrix composite and a preparation method thereof. The preparation method comprises the steps that by volume fraction, 5%-20% of ti-based metal glass particles and 80%-95% of aluminum alloy powder are mixed to be uniform on a ball grinding mill, a mixed material is obtained, then, the mixed material is put into a cold pressing mold at the room temperature to be subjected to cold pressing, and a blank is obtained; and the obtained blank is put into an aluminum coating and then put into hot extrusion equipment, the blank is preheated to 350 DEG C-450 DEG C, the mold is preheated to 300 DEG C-450 DEG C, then, hot extrusion forming is carried out under the conditions that the extrusion pressure ranges from 75 MPa to 150 MPa, the extrusion time ranges from 30 s to 5 min and the extrusion ratio ranges from 8 to 15, and the ti-based metal glass particle reinforced aluminum matrix composite is obtained. The ti-based metal glass particle reinforced aluminum matrix composite adopts ti-based metal glass particles as wild phase materials and has the beneficial effects of being high in strength, hardness and elasticity modulus.