The invention discloses a processing method and apparatus when an object is collided. The processing method includes the steps: acquiring a damage determination area for a first object, wherein the damage determination area is used for determining whether the first object collides with other objects in the current scene; determining that a second objet enters the damage determination area; and triggering the second object to execute a behavior sequence after collision. The processing method and apparatus when an object is collided can solve the technical problem that in the related technologies, the provided mutual collision mode among objects is not easy to perform damage determination.