Abstract: Titanium foam is widely used in aerospace, military, marine engineering, automotive, biomedical, and other industries because it has low density, good mechanical properties, and unique functional features. The main preparation methods of titanium foam, such as sintering method, adding pore forming agent method, dipping method, gel casting method and 3D printing method are described. The compression properties, energy absorption properties, biocompatibility, electromagnetic shielding property, sound absorption property and fretting wear property, as well as its broad application prospect in the field of biomedicine, battery electrode and aerospace are discussed.