Disclosed are a dust box and an automatic cleaning apparatus. The dust box includes a dust box body, including a bottom wall and a side wall disposed around an edge of the bottom wall, the side wall extending from the bottom wall in a direction away from the bottom wall, and the bottom wall and the side wall enclosing an accommodation space; and a dust box lid, pivotally connected to a first side wall of the dust box body and covering a top of the accommodation space, a second side wall of the dust box having an elastic sheet assembly pivotally and elastically connected to the second side wall, and the elastic sheet assembly being rotatable relative to the second side wall about a first axis; and the dust box lid having a protruding portion configured to cooperate with the elastic sheet assembly when the dust box lid covers the top of the accommodation space.