The invention discloses a method for filling an aerosol generating product. The method comprises the following steps of (1) preparing a tube body (1) of the aerosol generating product, (2) filling a filtering part (2) in the tube body (1), wherein the filtering part (2) is close to the near lip end of the tube body (1), (3) installing the blocking flow guide part (3) from the far lip end of the tube body (1), (4) installing a fuming unit (4) from the far lip end of the tube body (1), wherein the smoke generating unit (4) is positioned at the far lip end of the tube body (1), and (5) sealing the far lip end of the tube body (1), and forming a sealing piece (5) on the end surface of the far lip end of the tube body (1). Each part is sequentially filled from the near lip end to the far lip end of the aerosol generating product for the first time, so that the pollution to the tube body (1) caused by the fuming unit (4) when the fuming unit (4) is filled is effectively avoided, the appearance qualification rate of the product can reach 100%, the manual quality inspection strength is reduced, the efficiency is improved, the loss is reduced, and the profit margin is increased for enterprises.