Provided is an adjustable hollow food-leaking toy. The adjustable hollow food-leaking toy includes a housing and an inner container； the inner container is a hollow shell made of a hard material； a food eaten by a pet is accommodated in the inner container； a window configured to leak the pet food is formed on the sidewall of the inner container； the window can be switched between a sealed state and a non-sealed state. The housing is a hollow shell； the inner container is held in the housing； a space for moving the pet food is provided between the housing and the inner container； and multiple food-leaking holes for leaking the pet food are formed on the sidewall of the housing.
