A foldable tent frame includes a base, a foldable tent frame rod mounted on the base, and a middle support rod for controlling the folding and unfolding of the tent frame rod; the top end of the middle support rod is pivotably connected to a fixed position on the tent frame rod, and the bottom end is slidably and pivotably connected to the base; when the middle support rod is erected via the bottom end sliding on the base, the tent frame rod is unfolded accordingly; when the middle support rod collapses via the bottom end sliding on the base, the tent frame rod is folded accordingly; the tent can be quickly folded or unfolded by controlling the sliding of the bottom end of the middle support rod on the base, and the foldable tent frame is structurally simple and easy to operate.