The invention relates to a method for preparing a lobate ferroferric oxide aerogel particle, which comprises the following concrete steps of: dispersing precursor Fe(OH)2 and Fe(OH)3 of a Fe3O4 crystal into a solution; dispersing the mixing solution into an ammonium tartrate ethanol solution for ageing for more than 1h at 20-90 DEG C; and preparing the lobate porous ferroferric oxide aerogel particle assembled by Fe3O4 nano pieces by adopting a supercritical drying method. The invention prepares the lobate ferroferric oxide aerogel particle by adopting a soft template method and utilizing a supercritical drying technology, has easy operation of the preparation process, and does not need the steps of impurity removal, and the like, and the prepared particle has the advantages of large specific surface area, crystal appearance, integral structure, high impurity, stable magnetic property, and the like; and the system has favorable application prospect in the fields of microwave absorption, high-energy batteries, targeted medicine materials, sensitive devices, catalysts, and the like.