A paint applicator is provided with a handle formed with a paint-entry passage, a first housing half connected to the handle, a second housing half jointed to the first housing half and formed with a plurality of paint exit holes, a non-permeable resilient body disposed on the second housing half and formed with a plurality of apertures, a permeable foamed body, and a brush layer. The apertures are closed in normal conditions and will be opened under pressure. Paint is accumulated in a paint chamber between the first and second housing halves, and then will flow out only when the paint pressure is greater than a deformation threshold value of the non-permeable resilient body. Furthermore, since the apertures are very small and can be evenly and densely distributed over the resilient body, paint will be evenly permeated to the permeable foamed body and the brush layer.