The invention discloses a layering pre-force-falling type door stop, and belongs to the field of door stops. According to the layering pre-force-falling type door stop, through the arrangement of an extension cover, during door opening, through deformation during deformation outer overturning of the extension cover, the pre-force-falling function is achieved before an inner contraction suction head makes contact with an embedded base on the outer layer, and after the inner contraction suction head and the embedded base are in contact, a sand deformation bag is gradually arranged towards the outer side of the contact point under the action of the inner contraction suction head, and the function of buffering and force unloading is achieved on the inner layer at the time; during door closing,through the sand deformation bag, compared with the prior art, instant acting force generated when the inner contraction suction head and the embedded base are suddenly separated is effectively relieved, accordingly, the integral usage time number and service life of the inner contraction suction head and the embedded base are effectively prevented from being influenced by single-time excessive stress, meanwhile, the situation that the inner contraction suction head falls due to multi-time stress is effectively avoided, and the maintenance cost is reduced.